Specifications Quartz movement (battery powered/Seiko movement), sweep seconds, water resistant to 20 bar, screw-in crown, SR920SW battery Size approx. 38mm x 38mm x 14mm (excluding the lugs and the crown) Around the wrist: approx. 20cm~13cm Material Case:Stainless steel Belt:Stainless steel 【Accessory】Box 1 year of store warranty