Upgrade the retro look you love with the octagonal GA-2100 line, which inherits the design concept of the very first G-SHOCK, but now with Smartphone Link and Tough Solar power.

• Case / bezel material: Resin
• Resin Band
• Mineral Glass
• Neobrite
• Shock Resistant
• Carbon Core Guard structure
• 200-meter water resistance
• Tough Solar (Solar powered)
• Double LED light
  LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
  LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
  LED:White
• Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
• Mobile link (Wireless linking using Bluetooth)
• World time, 38 time zones (38 cities coordinated universal time), city code display, city name display, daylight saving on/off, auto summer time (DST) switching, Home city/World time city swapping
• 1/100-second stopwatch
  Measuring capacity: 00'00''00~59'59''99 (for the first 60 minutes)
  1:00'00~23:59'59 (after 60 minutes)
  Measuring unit: 1/100 second (for the first 60 minutes)
  1 second (after 60 minutes)
  Measuring modes: Elapsed time, lap/split time
• Countdown timer
  Measuring unit: 1 second
  Countdown range: 60 minutes
  Countdown start time setting range: 1 second to 60 minutes (1-second increments and 1-minute increments)
• 5 daily alarms
• Hourly time signal
• Battery level indicator
• Power Saving (display goes blank to save power when the watch is left in the dark)
• Full auto-calendar (to year 2099)
• 12/24-hour format
• Button operation tone on/off
• Date/month display swapping
• Day display (days of the week selectable in six languages)
• Regular timekeeping: Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (battery level, mode), Digital: Hour, minute, second, pm, month, date, day
• Accuracy: 15 seconds per month
• Approx. battery operating time:
• 11 months on rechargeable battery (operation period with normal use without exposure to light after charge)
• 27 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
• Size of case : 48.5?45.4?11.9mm
• Total weight : 52g