2100 Series Stainless steel band Mineral glass dial One-touch 3-fold clasp closure Shock resistant 200-meter water resistance 3 years battery life  31 time zones 1/100-second stopwatch Countdown timer 5 daily alarms Hourly time signal Double LED light Full auto-calendar  Button operation tone on/off Accuracy: ±15 seconds per month 12/24-hour format Dimensions: L 49.3 x W 44.4 x H 11.8 mm Compatible band size: 150-205mm   Style: gskgm2110d-8a Color: Silver Material: Resin / Stainless Steel