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Casio G-Shock GA-2100-1AER vs. Casio G-Shock GG-B100-1A3 + 1
Clock face
Black
Black
Black
Colour of bracelet
Black
Black, Grey, Green
Type of hands
Analogue (clockwork), Digital
Analogue (clockwork), Digital
Analogue (clockwork)
Thickness
12 mm
19 mm
Width
45 mm
53 mm
39 mm
Features
Date display, Chronograph, Lighting, Timer, World time, Shock resistant, Stopwatch, Alarm, Luminescent
Date display, Chronograph, Timer, World time, Shock resistant, Barometer, Bluetooth, Stopwatch, Alarm, Luminescent, Compass
Date display, Chronograph
Water resistance (max depth)
200 m
200 m
30 m
Water resistance (max pressure)
20 ATM
20 ATM
3 ATM
Bracelet (material)
Resin Band, Rubber, Gold, Silicone
Resin Band, Rubber, Gold, Silicone
Leather
Case
Plastic / Synthetic
Plastic / Synthetic
Type of glass
Mineral glass
Mineral glass
Mineral glass
Primary power source
Battery
Battery
Battery