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At A Glance

Building on the success of last year’s Go Green series, G-Shock introduces two new designs for Go Green in 2011. These eco-friendly watches feature a Tough Solar Power system to harnesses the power of the sun and other light to keep the battery charged. Along with Solar Power, green LCD displays and accents identify these models as eco-friendly watches. Set against pure white case & bands, their clean looks keep you in touch with the natural world.
  • Eco-friendly & Smart Tough Solar Power
  • Shock Resistant
  • 200M Water Resistant
  • Tide & Moon Graphs (GR7900EW only)




  • Band Type:  Resin
  • Color:  White
  • Dial Code:  Digital

Technical Specs

  • Tough Solar Power
  • Shock Resistant
  • 200M Water Resistant
  • Full Auto EL Backlight with Afterglow
  • Moon Data (moon age of the specific date, moon phase graph)
  • Tide Graph (tide level for specific date and time)
  • World Time
    31 times zones (48 cities + UTC), city code display, daylight saving on/off
  • 4 Daily Alarms and 1 Snooze Alarm
  • Hourly Time Signal
  • 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
    Input range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
  • Battery power indicator
  • Power saving function
  • Button operation tone on/off
  • Full Auto Calendar (pre-programmed until the year 2099)
  • 12/24 Hour Formats
  • Accuracy: +/- 15 seconds per month
  • Storage battery: Solar rechargeable battery
  • Approx. battery life: 10 months on full charge (without further exposure to light)
    27 months on rechargeable battery (operation period when stored in total darkness with power save function on after full charge)
  • Module 3270

Size of case/total weight
GR7900EW 52.4 x 50.0 x 17.7mm / 71g