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Casio G-Shock GA-2100-1AER vs. Omega Seamaster Aqua Terra Chronometer 231.10.42.21.06.001 + 3
Clock face
Black
Black, Grey
Black
Black, Grey
Black
Colour of bracelet
Black
Silver
Silver
Black, Blue
Black, Blue, Silver
Type of hands
Analogue (clockwork), Digital
Analogue (clockwork)
Analogue (clockwork)
Analogue (clockwork), Digital
Digital
Thickness
12 mm
13.2 mm
15 mm
13 mm
Width
45 mm
41.5 mm
43 mm
50 mm
43 mm
Features
Date display, Chronograph, Lighting, Timer, World time, Shock resistant, Stopwatch, Alarm, Luminescent
Date display, Luminescent, Chronometer (COSC)
Date display, Chronograph, Stopwatch, Luminescent
Date display, Chronograph, Lighting, Timer, World time, Shock resistant, Bluetooth, Stopwatch, Alarm, Luminescent
Date display, Shock resistant, Bluetooth, Stopwatch, Alarm
Water resistance (max depth)
200 m
150 m
300 m
200 m
200 m
Water resistance (max pressure)
20 ATM
15 ATM
30 ATM
20 ATM
20 ATM
Bracelet (material)
Resin Band, Rubber, Gold, Silicone
Steel
Steel
Resin Band, Rubber, Silicone
Steel, Gold
Case
Plastic / Synthetic
Stainless steel
Stainless steel
Silver, Stainless steel
Stainless steel, Aluminum
Type of glass
Mineral glass
Mineral glass
Sapphire glass
Mineral glass
Mineral glass
Primary power source
Battery
Automatic
Battery
Battery
Battery