51 × 43.8 × 12.4 mm (L × W × H) and 141 g in weight Material of the case and bezel Band made of stainless steel Band 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 Capacity measurement: