Operation Guide 5184
To turn Power Saving on and off
1. In the Timekeeping Mode, hold down A for about five
seconds until the left dial hand points to T1 and the city
code flashes on the upper display. This is the setting
2. Press C nine times until PS appears in the upper
display and a flashing on or OFF appears in the lower
display. This is the Power Saving on/off screen.
3. Press D to toggle Power Saving on (on) and off (OFF).
4. Press A twice to exit the setting mode.
Resetting the seconds to 00 while the current count is in the range of 30 to 59
causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are
reset to 00 without changing the minutes.
The year can be set in the range of 2000 to 2099.
The watch's built-in full automatic calendar makes allowances for different month
lengths and leap years. Once you set the date, there should be no reason to change
it except when battery power drops to Level 5 (CHG) (page E-40).
The current time for all city codes in the Timekeeping Mode and World Time Mode is
calculated in accordance with the Coordinated Universal Time (UTC) for each city,
based on your Home City time setting.
Illumination may be hard to see when viewed under direct sunlight.
Illumination turns off automatically whenever an alarm sounds.
Frequent use of illumination runs down the battery.
Under certain conditions, illumination may not turn on until about one second after
you turn the face of the watch towards you. This does not necessarily indicate
malfunction of the auto light switch.
You may notice a very faint clicking sound coming from the watch when it is shaken
back and forth. This sound is caused by mechanical operation of the auto light
switch, and does not indicate a problem with the watch.
Measuring unit: 1 second
Input range: 1 minute to 60 minutes (1-minute increments)
Other: Auto-repeat timing
Alarms: Four one-time alarms; one snooze alarm; Hourly Time Signal
Illumination: LED (light-emitting diode); Auto Light Switch (Full Auto LED Light
operates only in the dark)
Other: Power Saving
Power Supply: Solar cell and one rechargeable battery
Approximate battery operating time: 8 months (from full charge to Level 5
(CHG)) under the following conditions:
Watch not exposed to light
Display on 18 hours per day, sleep state 6 hours per day
1 illumination operation (1.5 seconds) per day
10 seconds of alarm operation per day
Frequent use of illumination runs down the battery. Particular care is required
when using the auto light switch (page E-53).
City Code Table
Rio De Janeiro
Auto Return Features
If you leave the watch with a flashing setting on the display for two or three minutes
without performing any operation, the watch will exit the setting mode automatically.
The watch will return to the Timekeeping Mode automatically if you do not perform
any operation for two or three minutes in the Alarm Mode.
The D and B buttons are used to change the hand setting in various setting modes.
In most cases, holding down these buttons will start high-speed movement of the
When you enter the World Time Mode or Alarm Mode, the data you were viewing
when you last exited the mode will appear first.
Auto light switch precautions
The auto light switch is turned off automatically whenever battery power is at Level 4
(CHG) (page E-40).
Avoid wearing the watch on the inside of your wrist. Doing so causes the auto light
switch to operate when it is not needed, which shortens battery life. If you want to
wear the watch on the inside of your wrist, turn off the auto light switch feature.
Illumination may not turn on if the face of the watch is
More than 15 degrees
more than 15 degrees above or below parallel. Make
sure that the back of your hand is parallel to the ground.
Illumination turns off in about one second, even if you
keep the watch pointed towards your face.
Static electricity or magnetic force can interfere with
proper operation of the auto light switch. If illumination
does not turn on, try moving the watch back to the
starting position (parallel with the ground) and then tilt it
back toward you again. If this does not work, drop your
arm all the way down so it hangs at your side, and then
bring it back up again.
Accuracy at normal temperature:
15 seconds a month
Digital Timekeeping: Hour, minutes, seconds, p.m. (P), month, day, day of the week
Time format: 12-hour and 24-hour
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
Other: Home City code (can be assigned one of 48 city codes); Standard Time /
Daylight Saving Time (summer time); Simultaneous Home Time/Dual Time
Analog Timekeeping: Hour, minutes (hand moves every 10 seconds)
World Time: 48 cities (29 time zones)
Other: Daylight Saving Time/Standard Time; Home City/World Time City Swapping
Measuring unit: 1/100 second
Measuring capacity: 23:59' 59.99''
Measuring modes: Elapsed time, split time, two finishes
Based on data as of December 2009.
The rules governing global times (UTC offset and GMT differential) and summer
time are determined by each individual country.