Casio 3144 Operation Manual

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Getting Acquainted

Congratulations upon your selection of this CASIO watch. To get the most out
of your purchase, be sure to read this manual carefully.
Keep the watch exposed to bright light
Bright light
Solar cell
• The watch continues to operate, even when it is not exposed to light.
Leaving the watch in the dark can cause the battery to run down, which will
result in some watch functions being disabled. If the battery goes dead, you
will have to re-configure watch settings after recharging. To ensure normal
watch operation, be sure to keep it exposed to light as much as possible.
Battery charges in the light.
Bright light
Solar cell
(Converts light to
electrical power.)
Rechargeable battery

General Guide

• The illustration below shows which buttons you need to press to navigate
between modes.
• In any mode, press L to illuminate the display.
World Time
Stopwatch Mode
Use the Timekeeping Mode to set and view the current time and date.
• Pressing A while in the Timekeeping Mode will cycle through the
Timekeeping Mode display formats as shown below.
Day of the Week/Day Screen
Day of week
PM indicator
Hour : Minute Second
Operation Guide 3144
The electricity generated by the solar cell of the
watch is stored by a built-in battery. Leaving or
using the watch where it is not exposed to light
causes the battery to run down. Make sure the
watch is exposed to light as much as possible.
• When you are not wearing the watch on your
wrist, position the face so it is pointed at a
source of bright light.
• You should try to keep the watch outside of
your sleeve as much as possible. Charging is
reduced significantly if the face is covered only
Battery discharges in the dark.
Timekeeping Mode
Data Recall
Press C.
Timer Mode
Alarm Mode
Date Screen
Barometric Pressure
Graph Screen
Month – Day
Press A.
• The actual level at which some functions are disabled depends on the
watch model.
• Frequent display illumination can run down the battery quickly and require
charging. The following guidelines give an idea of the charging time
required to recover from a single illumination operation.
Approximately five minutes exposure to bright sunlight coming in through
a window
Approximately 50 minutes exposure to indoor fluorescent lighting
• Be sure to read "Power Supply" for important information you need to
know when exposing the watch to bright light.
If the display of the watch is blank...
If the display of the watch is blank, it means that the watch's Power Saving
function has turned off the display to conserve power.
• See "Power Saving" for more information.
The built-in sensors of this watch measure barometric pressure, temperature
and altitude. Measured values are then shown on the display. Such features
make this watch useful when hiking, mountain climbing, or when engaging in
other such outdoor activities.
• The measurement functions built into this watch are not intended for
taking measurements that require professional or industrial precision.
Values produced by this watch should be considered as reasonable
representations only.
• CASIO COMPUTER CO., LTD. assumes no responsibility for any loss,
or any claims by third parties that may arise through the use of this
About This Manual
• You can use buttons B and D to enter a sensor mode directly from the
Timekeeping Mode or from another sensor mode. To enter a sensor mode
from the Data Recall, World Time, Stopwatch, Countdown Timer or Alarm
Mode, first enter the Timekeeping Mode and then press the applicable
Read This Before You Set the Time and Date!
This watch is preset with a number of city codes, each of which represents
the time zone where that city is located. When setting the time, it is important
that you first select the correct city code for your Home City (the city where
you normally use the watch). If your location is not included in the preset city
codes, select the preset city code that is in the same time zone as your
• Note that all of the times for the World Time Mode city codes are displayed
in accordance with the time and date settings you configure in the
Timekeeping Mode.
• Button operations are indicated using the
letters shown in the illustration.
• Each section of this manual provides you with
the information you need to perform operations
in each mode. Further details and technical
information can be found in the "Reference"
Sensor Modes
Press D.
Press B.
Thermometer Mode
Altimeter Mode
Press C.



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  Summary of Contents for Casio 3144

  • Page 1: Getting Acquainted

    Getting Acquainted • The actual level at which some functions are disabled depends on the Congratulations upon your selection of this CASIO watch. To get the most out watch model. of your purchase, be sure to read this manual carefully.
  • Page 2: Daylight Saving Time (Dst)

    Operation Guide 3144 • The displayed temperature value changes to °C (or °F) if a measured To set the time and date temperature falls outside the range of –10.0°C to 60.0°C (14.0°F to 1. In the Timekeeping Mode, hold down A until the city code starts to flash, 140.0°F).
  • Page 3 Operation Guide 3144 Altimeter Notes The watch’s altimeter uses a pressure sensor to detect current air pressure, • Normally, displayed altitude values are based on the watch’s preset which is then used to estimate the current altitude based on ISA (International conversion values.
  • Page 4: Recalling Altitude Data

    Operation Guide 3144 3. To stop an ongoing save session, hold down D for about one second until Altitude graph REC disappears from the screen. The altitude graph shows Altimeter Mode • The save session also will stop automatically when Periodic Record 40 is measurement results.
  • Page 5: World Time

    Operation Guide 3144 Stopwatch Note The stopwatch lets you measure elapsed time, • While the periodic record, high altitude, or low altitude screen is displayed, Hours split times, and two finishes. the bottom part of the display alternates between the measurement date •...
  • Page 6: Alarm Operation

    Operation Guide 3144 To set an alarm time Warning! • Always make sure you are in a safe place whenever you are reading 1. In the Alarm Mode, use D and B to scroll the display of the watch using the auto light switch. Be especially...
  • Page 7: Power Supply

    If you experience problems getting the special rechargeable battery Exposure Level (Brightness) Approximate to charge fully, contact your dealer or CASIO distributor about having it Exposure Time replaced. Outdoor Sunlight (50,000 lux) 5 minutes •...
  • Page 8 Whenever you have a sensor malfunction, be sure to take the watch to Mode is calculated in accordance with the Greenwich Mean Time (GMT) your original dealer or nearest authorized CASIO distributor as soon as differential for each city, based on your Home City time setting.
  • Page 9: City Code Table

    Operation Guide 3144 City Code Table Barometer and Thermometer Precautions City Other major cities in same time zone • The pressure sensor built into this watch measures changes in air City Code Differential pressure, which you can then apply to your own weather predictions. It is –11...