Plunge into cool-blue waters under the blaze of the mid-summer sun with the hallmark toughness of an oasis-inspired G-SHOCK. 

The slim, octagonal GA-2100 with a base color of navy blue. Then inspired by the refreshing sanctuary of an oasis lake, touches of blue-green accent the dial. 

Summery seasonal colors evoke the thrill of an oasis suddenly emerging in a tropical landscape. A great casual accessory for your marine sports style or street-savviest fashion.

• Case / bezel material: Carbon / Bio-based resin
  
• Bio-based resin band
  
• Mineral Glass
  
• Neobrite
  
• Shock Resistant
  
• Carbon Core Guard structure
  
• 200-meter water resistance
  
• 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
  
• World time
  
• 31 time zones (48 cities + coordinated universal time), daylight saving on/off 
  
• 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, split time, 1st-2nd place times
  
• Countdown timer
  
• Measuring unit: 1 second
  
• Countdown range: 24 hours
  
• Countdown start time setting range: 1 second to 24 hours (1-second increments,
• 1-minute increments and 1-hour increments)
  
• 5 daily alarms
  
• Hourly time signal
  
• Hand shift feature (Hands move out of the way to provide an unobstructed view of
• digital display contents)
  
• Full auto-calendar (to year 2099)
  
• 12/24-hour format
  
• Button operation tone on/off
  
• Regular timekeeping:
  
• Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day)
  
• Digital: Hour, minute, second, pm, month, date
  
• Accuracy: ±15 seconds per month
  
• Approx. battery life: 3 years on SR726W X 2
  
• Size of case : 48.5 × 45.4 × 11.8 mm
  
• Total weight : 51 g