| Specification. |
| Shock resistant (G-SHOCK) |
Electro-luminescent backlight
Full auto EL light |
| Solar powered |
| Dual time |
| Moon data (Moon age of the input data, moon graph) |
| Tide graph |
1/100-second stopwatch
Measuring capacity: 99:59'59.99"
Measuring modes: Elapsed time, split time, 1st-2nd place times
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Countdown timers
Measuring unit: 1 second
Countdown range: 60 minutes
Starting ranges: countdown start time (1 to 60 minutes, 1-minute increments)
Reset time (1 to 5 minutes, 1-minute increments)
Others: Auto-repeat, time up alarm, count up after countdown (up to 100 hours)
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Daily alarms
5 indepentent daily alarms (4 one-alarms and 1 Snooze/one-time alarm)
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| Hourly time signal |
| Brightness alarm |
| Battery power indicator |
|
Power Saving (Turns off the display when the watch is left in the dark)
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| Auto-calendar (to year 2039) |
| 12/24-hour format |
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Regular timekeeping: Hour, minutes, seconds, am/pm, month, date, day
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|
Accuracy: ±15 seconds per month |
Approx. battery operating time:
11 months on CTL1616 (Operating period with normal use without exposure to light after full charge)
26 months on CTL1616 (Operating period when stored in total darkness with the Power Save function ON after full
charge)
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Size of case
GL-220 .................. 50.3 x 46.5 x 16.2 mm / 62 g
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