SEIKO SRPK13K1(C5)

Specifications Movement Caliber Number 4R36 Movement Type Automatic with manual winding Power reserve Approx. 41 hours Jewels 24 Functions Stop second hand function Day/Date display Case/Band Case Material Stainless steel Case Size Thickness:13.4mmDiameter:42.5mmLug-to-lug:46.0mm Crystal Curved Hardlex LumiBrite LumiBrite on hands, index(es) and bezel Distance between lugs 22mm Other Details Water Resistance 10 bar Weight 165.0g Features SPECIAL EDITION on the case back Unidirectional rotating bezel Three-fold clasp with secure lock See-through & Screw case back In an actual product, the case back direction might be different from the photograph.