Essential Details Dimensions of the case (L x W x H): 55 x 50.5 x 11.8 mm; weight: 154 g Material of the case and bezel The band is made of stainless steel. Three-fold one-touch clasp Resistance to water Water resistance of 100 meters Battery life and power source The SR920SW's battery lasts about three years. Features of the Watch 1/10-second stopwatch