2100 Series Resin and stainless steel composition Analog-digital dial Adjustable cloth band with belt loop and ruched contruction Mineral glass Shock resistant construction 200-meter water resistance Carbon core guard structure Approx battery life: 3 years on SR726W X 2 World time zones Stopwatch, timer, alarm, and hourly time signal Full auto-calendar Double LED light Mute feature with button operation on off-tone Size: H 0.46 x W 1.74 x D 1.94 in Weight: 72 grams