BA110 series Resin composition Adjustable band Shock-resistant construction 100-meter water resistance Approx. battery life: 2 years on SR726W X 2 Mineral glass World time - 29 time zones 1/100-second stopwatch Countdown timer LED light Full auto-calendar  Button operation tone on/off 12/24-hour format Size: H 0.62 x W 1.70 x L 1.82 in Weight: 45 g    Style: ba110yk-4a Material: Resin