Citizen F158 Instruction Manual
  1. Manuals
  2. Brands
  3. Citizen Manuals
  4. Watch
  5. F158
  6. Instruction manual

Citizen F158 Instruction Manual

Hide thumbs Also See for F158:
Table of Contents

Advertisement

Quick Links

Download this manual
Thank you for your purchase of this Citizen watch.
Before using the watch, read this instruction manual carefully to ensure
correct use.
After reading the manual, store it in a safe place for future reference.
Be sure to visit the Citizen website at http://www.citizenwatch-global.com/ .
Here you will find a variety of information such as electronic setting guides,
answers to frequently asked questions, Eco-Drive recharging information and
more.
To check the movement number
A case number—4 alphanumeric characters and 6 or
more alphanumeric characters—is engraved on the
case back. (Figure on the right)
The first 4 characters of the case number represent
the movement number of the watch. In the example
on the right, "
" is the movement number.
Engraving position example
The engraving position may
differ depending on watch
model.
1

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the F158 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Citizen F158

Summary of Contents for Citizen F158

  • Page 1 After reading the manual, store it in a safe place for future reference. Be sure to visit the Citizen website at http://www.citizenwatch-global.com/ . Here you will find a variety of information such as electronic setting guides, answers to frequently asked questions, Eco-Drive recharging information and more.
  • Page 2 Safety precautions — IMPORTANT This manual contains instructions that should be strictly followed at all times not only for optimal use, but to prevent any injuries to yourself, other persons or property. We encourage you to read the entire booklet (especially, pages ) and understand the meaning of the following symbols: ■...
  • Page 3 Safety precautions — IMPORTANT ■ Important instructions are categorized and depicted in this manual as follows: (Following symbols are examples of Pictograms.) Warning (caution) symbol followed by prohibited matters. Warning (caution) symbol followed by instructions that should be followed or precautions that should be observed.

  • Page 4: Precautions To Be Taken When Diving

    Precautions to be taken when diving PROHIBITED Do not use this watch while diving when... • Do not use your watch while diving when the watch stops or exhibits any abnormal operation. CAUTION Diving with the watch • Persons using the diver’s watch are strongly recommended to receive proper instruction and training pertaining to diving and observe those rules at all times.
  • Page 5 Precautions to be taken when diving - Make sure that the band is firmly anchored to the watch body. - Make sure that there are no cracks or other damage to the watch band or the glass face. - Make sure that the register ring rotates properly. CAUTION During diving •...
  • Page 6 Features Satellite Wave-GPS „ Receives location and time information sent from GPS satellites and adjusts the time and calendar on the watch automatically. 200 m water resistant watch for diving „ This watch has 200 m water resistance and can be used for air diving with an air tank (SCUBA diving).
  • Page 7 Indicates the time around the world by choosing one of 38 time zones. ±5-second average monthly accuracy „ Keeps high accuracy without time signal reception. Perpetual calendar „ No need for monthly and leap-year date correction until February 28, 2100. * “Eco-Drive” is an original technology of Citizen.

  • Page 8: Table Of Contents

    CONTENTS Precautions to be taken when diving . . . . . . . . . . . . . . . . Before using this watch . . . . . . . . . . . . . . . . . . . . . . . . . . . Band adjustment .
  • Page 9 CONTENTS Setting the world time . . . . . . . . . . . . . . . . . . . . . . . . . . . Checking the current time zone setting .
  • Page 10 CONTENTS Information on satellite signal reception . . . . . . . . . . . . Checking and adjusting the leap second setting . . . . . . . . . Checking and adjusting the rollover number setting .
  • Page 11 CONTENTS Eco-Drive watch handling precautions . . . . . . . . . . . . . . Water resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Precautionary items and usage limitations .

  • Page 12: Before Using This Watch

    Before using this watch This watch has a rechargeable cell which is charged by exposing the dial to light. Expose the dial to direct sunlight regularly to charge the watch. For details of charging, see pages • Especially, satellite signal reception is power consuming. Take care.

  • Page 13: Band Adjustment

    Before using this watch Band adjustment We recommend seeking the assistance of an experienced watch technician for sizing of your watch. If adjustment is not done correctly, the bracelet may unexpectedly become detached leading to loss of your watch or injury (excluding products containing the band adjustment tool).

  • Page 14: How To Use A Specially Designed Crown/Button

    Before using this watch How to use a specially designed crown/button Some models are equipped with a specially designed crown and/or push button to prevent accidental operation. Screw down crown/button Unlock the crown/button prior to operate your watch. Unlock Lock Push the crown in to the case.
  • Page 15 Before using this watch Recessed button Press the button with a non-marring narrow-tipped object. • Metal objects may cause marring or scratching of the button.

  • Page 16: Component Identification

    Component identification Hands and buttons Hour hand Minute hand Button B Function hand Crown Date indication Button A Second hand Rotating bezel...
  • Page 17 Component identification Indication RX-TME: Reception-in-progress indication (time) RX-GPS: Reception-in-progress indication (location information) OK/NO: Reception result indication S/M/T/W/T/F/S: Day-of-week indication Power reserve indication (in five levels) ON/OFF: Summer time (DST) setting DIVE: Diving mode Place name/time zone • The illustrations in this instruction manual may differ from the actual appearance of your watch.

  • Page 18: Checking The Power Reserve And Power Generation

    Checking the power reserve and power generation amount Always care about the current power reserve and charging environment of the watch and charge it sufficiently. Indication of power generation amount in levels Indication of power reserve in levels Hour, minute and second Function hand hands...
  • Page 19 Checking the power reserve and power generation amount Make sure that the watch is not wet before operating it. Push the crown in to position 0 . Press and release the upper right button B . The power reserve and power generation amount at the moment of pressing the button are indicated in level.
  • Page 20 Checking the power reserve and power generation amount Indication of power reserve in levels Level See “Indication of power reserve in levels” on page Indication 24 - 19 19 - 14 5 months - 5 5 days or 14 - 5 months Duration months months...
  • Page 21 Checking the power reserve and power generation amount CAUTION • At the level 0, the second hand starts to move once every two seconds (insufficient charge warning function, page ). Some functions become unavailable while this function is activated. For details, see page •...
  • Page 22 Checking the power reserve and power generation amount Indication of power generation amount in levels The level of power generation amount means power being generated by the solar cell represented in 7 levels (0 - 6). Level See “Indication of power generation amount in levels” on page Indication Sufficient power Charge in a brighter location where the level of...
  • Page 23 Checking the power reserve and power generation amount CAUTION • The level of power generation amount indicated is that of the moment you operate the watch for its indication. The level indication does not reflect change of the level after your operation. •...

  • Page 24: Checking The Reception Result Of The Satellite Signal

    Checking the reception result of the satellite signal Make sure that the watch is not wet before operating it. Push the crown in to position 0 . Press and release the lower right button A . The previous reception result is indicated. Reception was successful.
  • Page 25 Checking the reception result of the satellite signal Press and release the lower right button A to finish the procedure. The hands returns to current time indication. • They return to current time indication automatically in about 10 seconds. About the reception result The previous reception result is stored for 6 days and “NO”...

  • Page 26: Setting The World Time

    Setting the world time This watch can indicate the time around the world according to which of 38 time zones (offsets from UTC — Coordinated Universal Time) is chosen. You can set offsets from UTC through any of the two ways below. How to set What to set A time zone is set automatically and time and calendar...

  • Page 27: Checking The Current Time Zone Setting

    Setting the world time Checking the current time zone setting Make sure that the watch is not wet before operating it. Pull the crown out to position 1 . The second hand indicates the current world time setting and the function hand indicates the current summer time (DST) setting.
  • Page 28 Setting the world time How to read indication of the world time setting The watch has 38 time zone markers with several representative area names. A time zone is set by pointing the second hand at one of the markers. On the illustration in the left, the second hand Time zone marker points to 21 seconds and time zone setting is...
  • Page 29 Setting the world time Table of time zones and representative places • Countries or regions may change time zones for various reasons. • The offsets in the table are based on the standard time. Second Time zone Area name Representative area hand London Paris...
  • Page 30 Setting the world time Second Time zone Area name Representative area hand Delhi +5.5 Kathmandu +5.75 — Dhaka Yangon +6.5 — Phuket, Bangkok PHUKET/HKT Beijing/Hong Kong Eucla +8.75 — Tokyo Adelaide +9.5 GREAT BARRIER Great Barrier Reef, Sydney REEF/— Lord Howe Island +10.5 —...
  • Page 31 Setting the world time Second Time zone Area name Representative area hand Noumea Fiji Islands, Auckland FIJI/NAN Chatham Islands +12.75 — Nuku'alofa Kiritimati — Baker Island –12 — Midway –11 Hawaii, Honolulu –10 HAWAII/HNL Marquesas Islands –9.5 — Anchorage –9 Los Angeles –8...
  • Page 32 Setting the world time Second Time zone Area name Representative area hand Denver –7 GALAPAGOS/SCY Galápagos Islands, Chicago –6 New York –5 Manaus –4 St. John's –3.5 — Rio de Janeiro –3 FERNANDO DE Fernando de Noronha –2 NORONHA/FEN Azores –1...
  • Page 33 Setting the world time • Even when choosing a time zone of a summer time area during summer time period, apply its standard offset from UTC for world time setting; activate summer time (DST) setting (page ) to apply summer time.

  • Page 34: Obtaining Location Information From Satellite Signals

    Setting the world time Obtaining location information from satellite signals A time zone is set automatically and time and calendar are consequently adjusted based on the chosen zone. Make sure that the watch is not wet before operating it. It is recommended to receive the satellite signals outdoors with the wide-open sky . For details of signal reception, see “Information on satellite signal reception”...
  • Page 35 Setting the world time After finishing the reception, the second hand indicates the new setting or “NO” of the reception result and returns to indicate the second. • To cancel the reception, press and hold any button until the second hand returns to indicate the second.

  • Page 36: Setting The Time Zone Manually

    Setting the world time Setting the time zone manually Make sure that the watch is not wet before operating it. Pull the crown out to position 1 . The second hand indicates the current world time setting and the function hand indicates the current summer time (DST) setting (page Rotate the crown to choose a time zone.

  • Page 37: Receiving Time Information

    Receiving time information It is recommended to receive the satellite signals outdoors with the wide-open sky . For details of signal reception, see “Information on satellite signal reception” (page You can use the three types of reception below to receive time information. You can also check the result of the previous reception (success or fail).
  • Page 38 Receiving time information Time reception (time required: about 3 - 30 seconds) Make sure that the watch is not wet before operating it. • location information is not obtained while receiving time information. Execute world time setting (page ) beforehand. •...
  • Page 39 Receiving time information After finishing reception, the second hand indicates the reception result (page ) and returns to normal movement. • To cancel the reception, press and hold any button until the second hand returns to normal movement. When the time or calendar is still incorrect even after reception Check the settings of world time (page ) and summer time (DST) (page If the time is still incorrect after that, execute leap second reception (page...
  • Page 40 Receiving time information Leap second reception (time required: about 36 seconds - 13 minutes) Reception to be executed when the leap second has been updated. Make sure that the watch is not wet before operating it. • You can also execute leap second setting manually. (page Push the crown in to position 0 .
  • Page 41 Receiving time information After finishing reception, the second hand indicates the reception result (page ) and returns to normal movement. • To cancel the reception, press and hold any button until the second hand returns to normal movement. When the time or calendar is still incorrect even after reception Check the settings of world time (page ) and summer time (DST) (page •...
  • Page 42 Receiving time information Automatic time reception The watch starts time reception automatically when the conditions belows are fulfilled: • The watch has not received satellite signals for 6 days or more. • The watch dial is being exposed to strong direct sunlight for 20 seconds or more. •...
  • Page 43 Receiving time information About automatic time reception Automatic time reception may be delayed in the following cases: • The second hand moved in two-second interval (shows insufficient charge warning) after the last reception. Automatic time reception is executed 6 days or more after the insufficient charge warning stopped by charging the watch.

  • Page 44: Switching Summer Time (Dst) And Standard Time

    Switching summer time (DST) and standard time Summer time (Daylight Saving Time: DST) is a system adopted in some countries/ areas to gain an extra daylight during summer. This watch can display summer time (DST) or standard time according to the city selected for world time.
  • Page 45 Switching summer time (DST) and standard time Make sure that the watch is not wet before operating it. . Pull the crown out to position 1 . The second hand indicates the current world time setting and the function hand indicates the current summer time (DST) setting.

  • Page 46: Using The Diving Mode

    Using the diving mode By using the diving mode, you can prevent unintended operation of buttons and deactivate the signal reception function. In the diving mode, the following functions are deactivated: • Checking the power reserve, power generation amount and reception result •...
  • Page 47 Using the diving mode Make sure that the watch is not wet before operating it. Push the crown in to position 0 . Press and release both the lower right button A and upper right button B simultaneously. The hands temporarily show 0:00:00, then the function hands points “DIVE”...

  • Page 48: Charging Your Watch

    Charging your watch This watch has a solar cell under the dial and stores the power generated by the cell in its built-in rechargeable cell. The cell is charged by exposing the dial to light such as direct sunlight or fluorescent lamps. For optimal performance, be sure to: •...
  • Page 49 Charging your watch CAUTION • This watch contains a large-capacity rechargeable cell for performing power- consuming satellite signal reception. This large capacity cell takes more time to charge than those found in other Eco-Drive watches. • If the surrounding temperature falls below 0°C (32°F) or exceeds 40°C (104°F), the “Charge suspension temperature detection function”...
  • Page 50 Charging your watch When the watch reaches a low charge state (insufficient charge warning function) When the power reserve becomes low, the second hand moves once every two seconds. This is the insufficient charge warning function. Be sure to fully charge your watch immediately as outlined below.
  • Page 51 Charging your watch During the insufficient charge warning state The time and date is indicated correctly. Operations below are available: • Checking power generation amount • Setting the world time • Adjusting the time and calendar manually You cannot execute operations other than above such as obtaining location information, receiving satellite time signals or using the diving mode.
  • Page 52 Charging your watch Charging time by environment Below are the approximate charging times when exposing to light continuously. Please use this table as a reference only. Charging time (approx.) Illuminance To start working To become fully Environment (lx) To work for one day normally when the charged when the cell cell is discharged...
  • Page 53 Charging your watch Power save function The hour, minute and second hands stop automatically to save power as 3 days passed after stopping power generation. • The watch is still running internally to keep the time and calendar correctly even after the power save function has activated.

  • Page 54: Information On Satellite Signal Reception

    Information on satellite signal reception This watch receives time information from satellites to indicate the time and calendar. It also obtains location information from them to indicate time appropriate in the area where it is actually used. For receiving the satellite signal smoothly Satellite signal reception is power consuming.
  • Page 55 Information on satellite signal reception Cautions regarding receiving the satellite signal Do not perform signal reception while operating a vehicle as doing so is extremely dangerous. • If the second hand is moving once every two seconds (insufficient charge warning function), you cannot perform satellite signal reception.
  • Page 56 Information on satellite signal reception When receiving the satellite signal • As shown in the picture below, make sure you are in an area with few surrounding trees, buildings, or other objects which may obstruct the satellite signal. Face the dial towards the sky and perform signal reception.
  • Page 57 Information on satellite signal reception Receiving signals indoors near a window Place the watch near a window with a wide view of the sky and orient the dial in an obliquely upward direction to the sky. • Signal reception from some satellites is required for obtaining location information.
  • Page 58 Information on satellite signal reception Poor reception areas It may be difficult to receive the satellite signal under certain environmental conditions or in certain areas. Areas with obstructions above the watch Nearby objects which emit magnetism or noise • High-voltage electric cables, railway •...

  • Page 59: Checking And Adjusting The Leap Second Setting

    Information on satellite signal reception Checking and adjusting the leap second setting This watch displays the time by applying the leap second to the International Atomic Time information received from satellites. • The leap second may be applied once a few years and the leap second setting on the watch must be adjusted each time it applied.
  • Page 60 Information on satellite signal reception Make sure that the watch is not wet before operating it. Pull the crown out to position 2 . The second hand points to 0 second. Press and hold upper right button B for 2 seconds or more.
  • Page 61 Information on satellite signal reception Turn the crown to adjust the setting if it is not correct. • Adjustable range is from 0 to ‒90 seconds. Push the crown in to position 0 to finish the procedure.

  • Page 62: Checking And Adjusting The Rollover Number Setting

    Information on satellite signal reception Checking and adjusting the rollover number setting In order for this watch to correctly process the week information received from the satellite (week numbers), a rollover number for each time period is set. The rollover numbers will be updated automatically.
  • Page 63 Information on satellite signal reception Table of rollover number and time period Time period (Coordinated Universal Time, GMT) Rollover number 22/8/1999 (Sun) 0:00 – 7/4/2019 (Sun) 0:00 – 21/11/2038 (Sun) 0:00 – 7/7/2058 (Sun) 0:00 – 20/2/2078 (Sun) 0:00 – 6/10/2097 (Sun) 0:00 –...
  • Page 64 Information on satellite signal reception Make sure that the watch is not wet before operating it. Pull the crown out to position 2 . The second hand points to 0 second. Press and hold upper right button B for 2 seconds or more.
  • Page 65 Information on satellite signal reception Turn the crown to adjust the setting if it is not correct. • Adjustable range is from “0” to “5”. • See “Table of rollover number and time period” on page Push the crown in to position 0 to finish the procedure.

  • Page 66: Adjusting The Time And Calendar Manually

    Adjusting the time and calendar manually • Execute world time setting (page ) beforehand. Make sure that the watch is not wet before operating it. Pull the crown out to position 1 . Press and hold the upper right button B until the second hand points to 30 seconds.
  • Page 67 Adjusting the time and calendar manually Press and release the lower right button A repeatedly to change the hand/indication to be corrected. • Each time you press button A , the target changes as follows: Minute → hour → date → year/month → day of week → (back to the top) •...
  • Page 68 Adjusting the time and calendar manually Rotate the crown to adjust the hand/indication. • Year and month are indicated with the second hand. Set them referring to “Month and year indications” on the page • Date indication changes to the next as the function hand rotates 5 times.
  • Page 69 Adjusting the time and calendar manually Repeat steps 4 and 5. Push the crown in to position 0 in accordance with a reliable time source to finish the procedure. The second hand starts moving from 0 second.
  • Page 70 Adjusting the time and calendar manually Month and year indications Set the year and month with the position of the second hand. “Month” corresponds to one of the 12 “Year” corresponds to the years since zones shown in the figure below. leap year and is indicated with markers Each number means month.
  • Page 71 Adjusting the time and calendar manually Years since leap Year Second hand position year 2020 2024 2028 2032 2036 0 (Leap year) Hour marker 1st min. marker 2021 2025 2029 2033 2037 2nd min. marker 2022 2026 2030 2034 2038 3rd min.

  • Page 72: Using The Rotating Bezel

    Using the rotating bezel You can find the elapsed time of diving or remaining time to a target time by minute. • To prevent accidents, the rotating bezel moves counterclockwise only. Finding the elapsed time Rotate the rotating bezel to set the mark to the current position of the Rotation direction minute hand.
  • Page 73 Using the rotating bezel Finding the remaining time Rotate the rotating bezel to set the mark to the target time. Current position • The target time is set to 20 minutes after of the minute the current time in the illustration. Rotation direction hand Read the time between the current...

  • Page 74: Troubleshooting

    Troubleshooting Troubleshooting Checking and correcting the reference position If the time or calendar is not shown correctly even after proper reception of the time signal, check whether the reference position is correct. • If the hands and indication do not reflect the correct reference position, the time and calendar will not be indicated accurately even if the satellite signal is received.
  • Page 75 Troubleshooting Make sure that the watch is not wet before operating it. Pull the crown out to position 2 . Press and hold the upper right button A for 4 seconds. The hands and indication start to move to the current reference positions stored in memory.
  • Page 76 Troubleshooting Press and release the lower right button A . The function hands move slightly. Press and release the lower right button A repeatedly to change the hand/indication to be corrected. • Each time you press button A , the target changes as follows.
  • Page 77 Troubleshooting Repeat steps 5 and 6. Push the crown in to position 0 . Press and release the lower right button A to finish the procedure. • The watch returns automatically to the time indication as about 2 minutes passed without any operation.

  • Page 78: Symptom And Remedies

    Troubleshooting Symptom and remedies Symptom Remedies Page Problems with satellite signal reception When the second hand moves once every two seconds, the watch cannot receive signals. Charge the watch. Deactivate the diving mode. Avoiding places where the satellite signal may be obstructed and objects which emit noise Reception is such as mobile telephone base stations or...
  • Page 79 Troubleshooting Symptom Remedies Page Problems with satellite signal reception (continued) Automatic time reception does not Deactivate the diving mode. work correctly. Check the world time setting. Check the summer time (DST) setting. The correct time Execute leap second reception if the time and and calendar are calendar is still incorrect even after executing not indicated...
  • Page 80 Troubleshooting Symptom Remedies Page Movement of a hand seems strange Charging may be stopped. (non-chargeable The power reserve is not state) Check it again at a location of suitable indicated. temperature. The second hand moves Charge the watch. once every two seconds. The second hand does not −...
  • Page 81 Troubleshooting Symptom Remedies Page Time/calendar is abnormal. Check the world time setting. Check the summer time (DST) setting. Receive the satellite signal to adjust the time Time/calendar is and calendar. incorrect. Check and correct the reference position. Adjust the time and calendar manually. Time is incorrect though Check the summer time (DST) setting.
  • Page 82 Troubleshooting Symptom Remedies Page Charging and other problems If the surrounding temperature falls below 0°C (32°F) or exceeds 40°C (104°F), the “Charge suspension temperature detection function” will activate and charging will not be possible. The watch does not If the watch does not work after exposing the work even though it is dial to direct sunlight for more than one day, charged.
  • Page 83 Troubleshooting Symptom Remedies Page Charging and other problems (continued) Charge the watch for 2 to 3 days under direct sunlight. If the second hand starts moving once The watch stops every two seconds the watch is being charged − immediately after it is correctly.
  • Page 84 Troubleshooting Resetting the watch - All Reset When the watch does not work properly, you can reset all the settings. If the power reserve is insufficient, charge the watch first. Be sure to perform the following operations after All Reset. .
  • Page 85 Troubleshooting Make sure that the watch is not wet before operating it. Pull the crown out to position 2 . Press and hold buttons A and B at the same time for 3 seconds or more and release them. As you release the buttons, the hands move slightly to indicate that reset completed.

  • Page 86: Eco-Drive Watch Handling Precautions

    Eco-Drive watch handling precautions <Always Make Sure to Recharge Frequently> • For optimal performance, your watch should remain fully charged. • Long sleeves may inhibit light transmission to your watch. This may result in your watch loosing charge. In these cases supplemental charging may be necessary.
  • Page 87 Eco-Drive watch handling precautions CAUTION Recharging Precautions • Do not charge the watch at a high temperature (about 60 °C (140 °F) or higher) as doing so may cause the movement to malfunction. Examples: • Charging the watch too close to a light source which generates a large amount of heat such as an incandescent lamp or halogen lamp.
  • Page 88 Eco-Drive watch handling precautions <Replacement of Rechargeable Cell> • This watch utilizes a special rechargeable cell that does not require periodical replacement. However power consumption may increase after using the watch for a number of years due to wear of internal components and deterioration of oils. This may cause stored power to be depleted at a faster rate.
  • Page 89 Eco-Drive watch handling precautions WARNING Use Only the Specified Battery • Never use a battery other than the rechargeable cell specified for use in this watch. Although the watch structure is designed so that it will not operate when another type of battery is installed, if a conventional watch battery or other type of battery is installed in the watch and the watch is recharged, there is the risk of overcharging which may cause the battery to rupture.

  • Page 90: Water Resistance

    Water resistance WARNING Water Resistance • This is a water-resistant watch for SCUBA diving. Refer to the table below to use it correctly. • Diver’s water-resistant watches can be used only for SCUBA diving using an air tank and not for saturation diving using a helium gas tank.
  • Page 91 Water resistance • The packing used for this watch is a consumable part and will deteriorate over long-term use. Deterioration may lead to water penetration, causing the watch to malfunction or stop. Consult an authorized service center for inspection (for a charge) every 2 or 3 years, and replace the packing, glass or other parts as necessary.

  • Page 92: Precautionary Items And Usage Limitations

    Precautionary items and usage limitations CAUTION To Avoid Injury • Be particularly careful when wearing your watch while holding a small child, to avoid injury. • Be particularly careful when engaged in strenuous exercise or work, to avoid injury to yourself and others.
  • Page 93 Precautionary items and usage limitations CAUTION Precautions • Always use the watch with the crown pushed in (normal position). If the crown is of the screw lock-type, make sure it is securely locked. • Do not operate (use the crown and/or buttons) the watch when it is wet. Water may enter the watch causing damage to vital components.
  • Page 94 Precautionary items and usage limitations CAUTION When Wearing Your Watch <Band> • Leather bands and rubber (urethane) bands will deteriorate over time due to perspiration dirt. Because of the natural materials, leather band will be worn, deformed, and discolored over time.
  • Page 95 Precautionary items and usage limitations CAUTION When Wearing Your Watch (continued) • Please request adjustment or repair of the band in the following cases: - You notice an abnormality with the band due to corrosion. - The pin of the band is protruding. •...
  • Page 96 Precautionary items and usage limitations <Strong Shock> • Avoid dropping the watch or subjecting it to other strong impact. It may cause malfunctions and/or performance deterioration as well as damage to the case and bracelet. <Static Electricity> • The integrated circuits (IC) used in quartz watches are sensitive to static electricity. Please note the watch may operate erratically or not at all if exposed to intense static electricity.
  • Page 97 Precautionary items and usage limitations CAUTION Always Keep Your Watch Clean • Rotate the crown while it is pressed in fully and press the buttons periodically so they do not become stuck due to accumulations of foreign matter. • The case and band of the watch come into direct contact with the skin. Corrosion of the metal or accumulated foreign matter may result in black residue coming from the bracelet when exposed to moisture or perspiration.
  • Page 98 Precautionary items and usage limitations Caring for Your Watch • Wipe any dirt or moisture such as perspiration from the case and crystal with a soft cloth. • For metallic, plastic or synthetic rubber (polyurethane) band, clean it with soap and a soft toothbrush.
  • Page 99 Precautionary items and usage limitations <When Luminous Paint is used for your watch> The paint on the dial and hands helps you with reading the time in a dark place. The luminous paint stores light (daylight or artificial light) and glows in a dark place. It is free from any radioactive substance or any other material harmful to a human body or environment.

  • Page 100: Specifications

    Specifications Model Type F158 Analog solar-powered watch Timekeeping accuracy Average monthly accuracy: ±5 seconds when worn at normal operation (without reception) temperatures between +5°C (41°F) and +35°C (95°F) Operating ‒10°C (14°F) to +60°C (140°F) temperature range • Time: Hours, minutes, seconds •...
  • Page 101 Specifications • Solar power function • Indicating the result of the last • Overcharging prevention function reception (OK/NO) • Insufficient charge warning function • Diving mode (DIVE) (two-second interval movement) • World time — 38 time zones (27 • Over discharge detection function place names) •...

Table of Contents