Omega Seamaster Cosmic Ocean Chronograph, 45.5 mm diameter mechanical men's watch.

Omega Seamaster Cosmic Ocean Chronograph Style: Automatic, 45.5 mm, men Material: stainless steel Basic movement: Shanghai 7750 Movement type: automatic machinery Movement diameter: 27 mm Movement thickness: 6.85 mm Balance wheel: no card degree Vibration frequency: 28800 oscillations per hour Number of gems: 37 Power reserve: 52 hours Appearance diameter: 45.5 mm Case material: stainless steel Dial color: black Dial shape: round Table mirror material: sapphire crystal glass Strap color: black Buckle material: stainless steel Waterproof depth: 600 meters