With an integrated GPS and heart-rate wrist monitor, the Suunto Spartan Trainer GPS Watch becomes a personal coach ready to push you to new levels of fitness. Use the GPS to track speed, pace and distance during your workouts. Watch also tracks calories expended and steps 24/7. Battery lasts 10 hours in training mode and up to 30 hours using power-saving options. Fits 6-10 wrists. Water-resistant to 50 meters. Case diameter:46mm. Band width: .85. Wt:2.72 oz. Colors:Black, Black/Gold. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Fitness Trackers.