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Casio G-Shock GA-2100-1AER vs. Omega Speedmaster Moonwatch Professional 311.30.42.30.01.005 + 4

Clock face
Black
Black
Black
Black, Grey
Black, Grey
White, Blue, Green, Silver
Colour of bracelet
Black
Silver
Black
Black, Blue
Black
Brown, Black, Blue
Type of hands
Analogue (clockwork), Digital
Analogue (clockwork)
Analogue (clockwork)
Analogue (clockwork), Digital
Digital
Analogue (clockwork)
Thickness
12 mm
14 mm
11.5 mm
15 mm
12.7 mm
12 mm
Width
45 mm
42 mm
42 mm
50 mm
46 mm
41 mm
Features
Date display, Chronograph, Lighting, Timer, World time, Shock resistant, Stopwatch, Alarm, Luminescent
Date display, Chronograph, Luminescent
Date display, Chronograph, Stopwatch, Luminescent
Date display, Chronograph, Lighting, Timer, World time, Shock resistant, Bluetooth, Stopwatch, Alarm, Luminescent, Solar power
Date display, Chronograph, Lighting, Timer, World time, Shock resistant, Radio controlled, Stopwatch, Alarm, Solar power
Date display
Water resistance (max depth)
200 m
50 m
200 m
200 m
200 m
50 m
Water resistance (max pressure)
20 ATM
5 ATM
20 ATM
20 ATM
20 ATM
5 ATM
Bracelet (material)
Resin Band, Rubber, Gold, Silicone
Steel
Rubber
Resin Band, Rubber, Silicone
Resin Band, Rubber, Silicone
Leather
Case
Plastic / Synthetic
Stainless steel
Stainless steel
Silver, Stainless steel
Stainless steel, Plastic / Synthetic
Silver, Stainless steel, Aluminum
Type of glass
Mineral glass
Hesalite
Sapphire glass
Mineral glass
Mineral glass
Mineral glass
Primary power source
Battery
Manual
Battery
Battery
Battery
Automatic