Casio G-Shock GM-2100 Series Metal Bezel - Hairline Blue 

GM2100N-2A

GM-2100N-2A Specification:

Case size (L× W× H): 49.3 × 44.4 × 11.8 mm
Weight: 72 g
Case and bezel material: Resin / Stainless steel
Band: Resin Band
Construction: Shock Resistant
Water resistance: 200-meter water resistance
Power supply and battery life: Approx. battery life: 3 years on SR726W X 2

Exterior
Glass: Mineral Glass
Other: Neobrite

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

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