Casio G-Shock GW-6900U-1 Watch - Black

World time 31 time zones (48 cities + coordinated universal time), city code display, daylight saving on/off

1/100-second stopwatch Measuring capacity: 23:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times

Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)

5 daily alarms (with 1 snooze alarm)

Hourly time signal

LED backlight (Super Illuminator) Full auto LED light, selectable illumination duration (1.5 seconds or 3 seconds), afterglow

LED:White

Full auto-calendar (to year 2099)

Button operation tone on/off

Power Saving (display goes blank to save power when the watch is left in the dark)

Battery level indicator

Approx. battery operating time: 10 months on rechargeable battery (operation period with normal use without exposure to light after charge) 26 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)

Accuracy: ±15 seconds per month (with no signal calibration)

12/24-hour format

Regular timekeeping: Hour, minute, second, pm, month, date, day

Time Calibration Signals Station name: DCF77 (Mainflingen, Germany) Frequency: 77.5 kHz Station name: MSF (Anthorn, England) Frequency: 60.0 kHz Station name: WWVB (Fort Collins, United States) Frequency: 60.0 kHz Station name: JJY (Fukushima, Fukuoka/Saga, Japan) Frequency: 40.0 kHz (Fukushima) / 60.0 kHz (Fukuoka/Saga) Station name: BPC (Shangqiu City, Henan Province, China) Frequency: 68.5 kHz

Time calibration signal reception Auto receive up to six* times a day (remaining auto receives canceled as soon as one is successful) *5 times a day for the Chinese calibration signal Manual receive The latest signal reception results