Smart and stylish, sleek and sophisticated — a GBM-2100 with bold metal bezel that delivers Smartphone Link and Tough Solar charging system, all in the same compact size. Key resin components used in the case and band are made with environmentally responsible bio-based resin. Choose your favorite color combination of vapor deposition finishes — the GBM-2100A-2B with blue dial and silvery indexes, the GBM-2100A-4B with burgundy dial and silvery indexes, or the GBM-2100A-8B with light yellow gold-colored dial and black accented indexes. Tough construction and stylish design in a timepiece that takes you from casual settings to business meetings with ease.

Case size (L× W× H)
49.3 × 44.4 × 11.9 mm
Weight
72 g
Case and bezel material

Bio-based Resin / Stainless steel
Band

Bio-based resin band
Construction

Shock Resistant
Water resistance

200-meter water resistance
Time adjustment

Bluetooth: Connects to a smartphone and automatically adjusts the time
Power supply and battery life

Tough Solar (Solar powered)
Country Of Origin

China
Smartphone Link feature

Mobile link (Wireless linking using Bluetooth®)
Apps

CASIO WATCHES
App connectivity feature

Auto time adjustment

Easy watch setting

Approximately 300 world time cities

Time & place

Reminder

Phone finder
Glass

Mineral Glass
Compatible band size

145 to 215 mm
Other

Neobrite
World time

World time 38 time zones (38 cities + coordinated universal time), auto summer time (DST) switching, home city/world time city swapping
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, lap/split time
Timer

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)
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
Energy saving feature

Power Saving (display goes blank to save power when the watch is left in the dark)
Battery display/alert

Battery level indicator
Run time

Approx. battery operating time: 7 months on rechargeable battery (operation period with normal use without exposure to light after charge) 18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
Accuracy

Accuracy: ±15 seconds per month (with no mobile link function)
Other features

Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)

12/24-hour format

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

Case size (L× W× H)

Weight

Case and bezel material

Band

Construction

Water resistance

Time adjustment

Power supply and battery life

Country Of Origin

Smartphone Link feature

Apps

App connectivity feature

Glass

Compatible band size

Other

World time

Stopwatch

Timer

Alarm/hourly time signal

Light

Light color

Calendar

Mute feature

Energy saving feature

Battery display/alert

Run time

Accuracy

Other features

CASIO G-Shock Analog Digital Steel Silver Dial | GBM2100A-8B