Seiko Men's Watches Premier SPB001J - WW Seiko 29 Jewels Self Winding Automatic Movement (Caliber 6R20) Stainess Steel Case and Band with Push Button Deployment Clasp Sapphire Crystal, 3 Dials Display Power Reserve Indicator(Duration of Full Charge: 45Hours), Day, and Date Hand Winding Capability, Screwed Down Transparent Caseback with Engraved Rotor Water Resistant 100M, Case Size: 42mm Diameter, 10mm Thickness