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Casio G-Shock GA-2100-1AER vs. Casio G-Shock G-9300RD-4 + 1

Clock face
Black
Blue
Colour of bracelet
Black
Type of hands
Analogue (clockwork), Digital
Analogue (clockwork)
Thickness
12 mm
11.8 mm
Width
45 mm
41 mm
Features
Date display, Chronograph, Lighting, Timer, World time, Shock resistant, Bluetooth, Stopwatch, Alarm, Luminescent
Shock resistant
Date display, Luminescent, Chronometer (COSC)
Water resistance (max depth)
200 m
300 m
Water resistance (max pressure)
20 ATM
30 ATM
Bracelet (material)
Resin Band, Rubber, Gold, Silicone
Resin Band
Steel
Case
Plastic / Synthetic
Stainless steel
Type of glass
Mineral glass
Sapphire glass
Primary power source
Battery
Battery
Automatic