Casio G-Shock [GA-2100-4ADR]

Case Size (L × W × H): 48.5 × 45.4 × 11.8 mm
Weight: 51 g
Case and Bezel Material: Carbon / Resin
Band: Resin Band
Construction: Shock Resistant, Carbon Core Guard Structure
Water Resistance: 200-meter water resistance

Power Supply and Battery Life: Approx. 3 years (SR726W × 2)

Exterior

Glass: Mineral Glass
Compatible Band Size: 145 to 215 mm

Watch Features

World Time:
31 time zones (48 cities plus Coordinated Universal Time), daylight saving time on/off

Stopwatch:
1/100-second stopwatch
Measuring capacity:

• 00 hours 00 minutes 00 seconds to 59 minutes 59.99 seconds (first 60 minutes)

• 1 hour 00 minutes 00 seconds to 23 hours 59 minutes 59 seconds (after 60 minutes)
  Measuring unit:

• 1/100 second (first 60 minutes)

• 1 second (after 60 minutes)
  Measuring modes: Elapsed time, split time, 1st and 2nd place times

Timer:
Countdown timer
Measuring unit: 1 second
Countdown range: Up to 24 hours
Countdown start time setting range: 1 second to 24 hours (1-second, 1-minute, and 1-hour increments)

Alarm and Hourly Signal:
5 daily alarms
Hourly time signal

Light:
Double LED light
LED light for the face with Super Illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow
LED backlight for the digital display with Super Illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow

Light Color: White LED

Calendar: Full auto-calendar up to year 2099

Mute Feature: Button operation tone on or off

Accuracy: ±15 seconds per month

Other Features:
12 or 24-hour format
Hand shift feature (hands move out of the way for unobstructed digital display viewing)
Regular timekeeping:

• Analog: 2 hands (hour, minute with movement every 20 seconds), 1 dial (day)

• Digital: Hour, minute, second, PM, month, date