DIGITAL,7900 SERIES GW7900-1

Learn more about the Men’s Black GW-7900-1 from G-SHOCK. Shop this product and other Digital watches today.

Basic Information

Case size (L× W× H)

52.4 × 50 × 17.7 mm

Weight

71 g

Case and bezel material

Resin

Band

Resin Band

Construction

Shock Resistant

Water resistance

200-meter water resistance

Time adjustment

Radio-controlled Watch; Multi band 6

Power supply and battery life

Tough Solar (Solar powered)

Exterior

Glass

Mineral Glass

Watch Features

World time

World time31 time zones (48 cities Coordinated Universal Time), city code display, daylight saving on/off

Moon data

Moon data (moon age of the specific date, moon phase graph)

Tide graph

Tide graph (tide level for specific date and time)

Stopwatch

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

Timer

Countdown timerMeasuring unit: 1 secondInput range: 1 minutes to 24 hours (1-minute increments and 1-hour increments)

Alarm/hourly time signal

5 daily alarms (with 1 snooze alarm)
Hourly time signal

Light

Electro-luminescent backlightFull auto EL light, afterglow

Light color

EL:Blue Green

Calendar

Full auto-calendar (to year 2099)

Mute feature

Button operation tone on/off

Energy saving feature

Power Saving (Turns off the display when the watch is left in the dark)

Battery display/alert

Battery power indicator

Run time

Approx. battery operating time:9 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

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

Other features

12/24-hour format
Regular timekeeping:Hour, minute, second, pm, month, date, day

Time adjustment details

Time Calibration SignalsStation name: DCF77 (Mainflingen, Germany)Frequency: 77.5 kHzStation name: MSF (Anthorn, England)Frequency: 60.0 kHzStation name: WWVB (Fort Collins, United States)Frequency: 60.0 kHzStation 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 receptionAuto 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 signalManual receiveThe latest signal reception results