Essential Details Dimensions of the case (L x W x H): 54 x 47.2 x 13.9 mm; weight: 179 g Material of the case and bezel Aluminum/Stainless Steel Band Band Made of Stainless Steel Three-fold one-touch clasp Resistance to water Water resistance of 100 meters Battery life and power source About two years of battery life on the SR920SW (3 hands and 3 dials) After two years