Essential Details Dimensions of the case: L x W x H = 49.5 x 43.9 x 10.8 mm; weight: 130 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 One-second stopwatch