The SRPE71K1 is a fun twist to the new Seiko 5 sports collection, which is the successor of the SKX. The watch carries similar design features but has gone away a bit from the classic ”dive watch” design features, which involves a black dial and a black bezel, and this gives the SRPE71K1 its very own look. Specifications: Movement Caliber Number 4R36 Movement Type Automatic with manual winding Duration Approx. 41 hours Exterior Case Material Stainless steel Crystal Hardlex LumiBrite LumiBrite on hands and indexes Other Details Water Resistance 10 bar Case Size Thickness: 13.4 ㎜Diameter: 42.5 ㎜Length: 46 ㎜ Weight 170.0 g Other Specifications Screw case back See-through case back Three-fold clasp with secure lock Unidirectional rotating bezel Other Features 24 jewels Day/Date display Stop second hand function