Specifications] Quartz Quartz 【SEIKO Movement】 20 ATM water resistance Calendar Counter-rotating bezel Screw-in crown Material] Case: Stainless steel Belt: Stainless steel Size] Approx. H50 x W43 x D11 mm (approx. H50 x W43 x D11 mm) Maximum belt arm circumference: approx. 20 cm. Accessories] Plain box Instruction manual Warranty card