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

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