Essential Details Dimensions of the case (L x W x H): 54.1 x 49.5 x 11.7 mm; weight: 185 g Material of the case and bezel Band made of stainless steel Band Made of Stainless Steel 3-fold one-touch Clasp Resistance to water Water resistance of 100 meters Battery life and power source The SR920SW's battery lasts about two years. Features of the Watch 1/10-second stopwatch