Seiko 5 Sports SSK001. 5 Sports SKX Sports Style. For over 50 years, Seiko 5 Sports has delivered consistently high levels of reliability, durability, performance and value that have endeared it to lovers of mechanical watches worldwide. Today, with the creation of a new design and a broad new collection, this much loved timepiece is re-born. Welcome to the new Seiko 5 Sports, a collection with all the same values but a fresh new look. Movement Caliber Number 4R34 Movement Type Automatic with manual winding Power reserve Approx. 41 hours Jewels 24 Functions 24-hour hand Stop seconds hand function Case Material Case Material Stainless steel Case Size Thickness:13.6mm Diameter:42.5mm Lug-to-lug:46.0mm Crystal Hardlex with lenses LumiBrite Lumibrite on hands and index(es) Clasp Three-fold clasp with push button release Distance between lugs 22 Other Details Water Resistance 10 bar Weight 161.0 Features See-through case back Screw case back Rotating bezel Three-fold clasp with secure lock Screw case back