Essential Details Dimensions of the case (L x W x H): 50.6 x 44 x 11.2 mm; weight: 151 g Material of the case and bezel Band made of stainless steel Band Made of Stainless Steel Three-fold one-touch clasp One hundred meters of water resistance Battery life and power source The SR920SW's battery lasts about three years. Features of the Watch Stopwatch M in one second