Casio G-Shock Digital Watch, 7900 Series, GW7900B-1

Casio G-Shock Digital Watch, 7900 Series, GW7900B-1

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.

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)

• World time

  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 

Casio watches have a one year limited manufacturers warranty. This does not include wear and tear.