Casio G-SHOCK 7900 Series a Digital Watch

Watch Features:

• Case size (L× W× H) - 52.4 × 50 × 17.7 mm
• Weight - 71 g
• Case / 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)

Product specs:

World time - 31 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 stopwatch
Measuring capacity: 23:59'59.99''
Measuring modes: Elapsed time, split time, 1st-2nd place times
Timer - Countdown timer
Measuring unit: 1 second
Input 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 backlight
Full 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 (display goes blank to save power when the watch is left in the dark)
Battery display/alert - Battery level 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 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

With the never ending pursuit of toughness and technology, G-Shock introduces a Solar Atomic addition to the tough and rugged G-Rescue series. Already iconic for its four point protection design, large case, oversized buttons, tide & moon graphs, this new model keeps the same design philosophy of allowing for high functionality and operability, in the harshest conditions, even while wearing gloves. With its monotone, grey IP coloring and aperture band design, this new addition to the G-Rescue series not only looks tough, it also very comfortable to wear.