Specifications Basic Information Case size (L× W× H) 48.5 × 45.4 × 11.8 mm Weight 51 g Case and bezel material Case / bezel material: Carbon / Resin Band Resin Band Construction Shock Resistant Carbon Core Guard structure Water resistance 200-meter water resistance Power supply and battery life Approx. battery life: 3 years on SR726W X 2 Exterior Glass Mineral Glass Other Neobrite Watch Features World time World time 31 time zones (48 cities + coordinated universal time), daylight saving on/off Stopwatch Timer Alarm/hourly time signal 5 daily alarms Hourly time signal Light Double LED light LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) Light color LED:White color Calendar Full auto-calendar (to year 2099) Mute feature Button operation tone on/off Accuracy Accuracy: ±15 seconds per month Other features 12/24-hour format