Seiko SSC931 Prospex Speedtimer Collection U. S. Special Edition Solar Chronograph Watch - Stainless/Blue

Case Diameter: 41.4 mm Case Thickness: 13 mm Case Length: 45.9 mm Lug Width: 21 mm Crystal: Curved Sapphire Crystal Dial Color: Blue Clasp: Tri-Fold Push Button Release Clasp Date Calendar LumiBrite Hands and Markers Caliber V192 Water Resistant: 10 bar, 100 meters (330 feet) Power Reserve: 6-Month Power Reserve Once Fully Charged Powered By Light Energy No Battery Change Required