The Bulova Marine Star men’s watch is a classic timepiece with a legacy stretching back decades. The open heartbeat automatic 21-jewel movement is showcased in the dial aperture and in the exhibition case back. The gold-tone stainless steel case is accented with black and features a black dial and a flat mineral crystal. The black textured silicone strap has a contrasting red underside, and the watch is water resistant to 200 meters, living up to its name as a timepiece that can go wherever you do without missing a beat. Product details: Movement: Mechanical Band: Silicone Case Size (mm): 45 Crystal: Mineral Water resistance: 20 ATM Additional functions: 3 Hand Automatic Sub Second Hand Hack Feature Warranty: 3 years Limited Manufacturer Warranty