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Casio G-Shock GA-2100-1AER vs. Omega Seamaster Aqua Terra Chronometer 231.10.42.21.06.001 + 2
Clock face
Black
Black, Grey
Blue
Black, Blue
Colour of bracelet
Black
Silver
Blue, Silver
Type of hands
Analogue (clockwork), Digital
Analogue (clockwork)
Analogue (clockwork)
Analogue (clockwork)
Thickness
12 mm
13.2 mm
11.8 mm
12 mm
Width
45 mm
41.5 mm
41 mm
45 mm
Features
Date display, Chronograph, Lighting, Timer, World time, Shock resistant, Stopwatch, Alarm, Luminescent
Date display, Luminescent, Chronometer (COSC)
Date display, Luminescent, Chronometer (COSC)
Date display, Chronograph, Luminescent
Water resistance (max depth)
200 m
150 m
300 m
50 m
Water resistance (max pressure)
20 ATM
15 ATM
30 ATM
5 ATM
Bracelet (material)
Resin Band, Rubber, Gold, Silicone
Steel
Steel
Steel
Case
Plastic / Synthetic
Stainless steel
Stainless steel
Stainless steel, Aluminum
Type of glass
Mineral glass
Mineral glass
Sapphire glass
Mineral glass
Primary power source
Battery
Automatic
Automatic
Battery