Casio GMA-S2100-4A2DR G-Shock

This series downsizes the GA-2100 to create a simple and slim design. The octagonal bezel, flat face, simple bar hour markers, and carbon core guard structure that are distinctive features of the GA-2100 are now available in a compact configuration.

• World time

  World time 31 time zones (48 cities + coordinated universal time), daylight saving on/off

• Stopwatch

  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

• Timer

  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)

• Alarm/hourly time signal

  5 daily alarms
  Hourly time signal

• Light

  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)

• Light color

  LED:White

• Calendar

  Full auto-calendar (to year 2099)

• Mute feature

  Button operation tone on/off

• Accuracy

  Accuracy: ±15 seconds per month

• Other features

  12/24-hour format
  Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
  Regular timekeeping: Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day) Digital: Hour, minute, second, pm, month, date.

• Case and bezel material

  Carbon / Resin　

• Band

  Resin Band

• Construction

  Shock Resistant
  Carbon Core Guard structure

• Water resistance

  200-meter water resistance