Seiko Premier #SPB007 Men's Self Winding Automatic Watch (Made in Japan) Seiko 23 Jewels Self Winding Automatic Movement (Caliber 6R15B) Stainess Steel Case and Band with Push Button Deployment Clasp Sapphire Crystal, Date Display, (Duration of Full Charge: 45Hours) Hand Winding Capability, Screwed Down Transparent Caseback with Engraved Rotor Water Resistant 100M, Case Size: 42mm Diameter, 10mm Thickness