2100 Series Resin and stainless steel composition Analog-digital dial Adjustable resin band with belt loop Mineral glass Shock resistant 200-meter water resistance Approx battery life: 3 years on SR726W X 2 World time zones Stopwatch, timer, alarm, and hourly time signal Calendar Mute feature Size: H 1.94 x W 1.74 x D 0.46 in Weight: 72 grams