TECHNOLOGY Double LED display shows information in crystal clear quality in any lighting condition 200-meter water and shock resistant construction protects against impact and vibration letting you take your watch through the toughest of environments Measures distance using an accelerometer while linked with the GPS function of a smartphone via Bluetooth(R) Connects with your phone via Bluetooth(R) to support auto time adjustment, phone notifications, step tracking, and other functions throughout the day. Battery Life: Approx. 2 years between replacements Memory capacity: Up to latest 45 records (measurement start month, date, hour, minute, lap/split times, total time, distance, average pace, calories burned, lap number, time, distance, average pace of each lap/split) LED: White Size of case: 51.3x48.9x16.6mm Total weight: 61g USES Track your steps with a 5 level step log count and targets Track your times with a 1/100 second stopwatch 200 lap memory lets you see your progress throughout your workout 5-level exercise intensity graph and daily goal attainment give you real-time feedback and keep you motivated SPECIAL FEATURES Keep track of your activity history by linking to an app on your smartphone 5 daily alarms Hourly time signal Low battery alert notifications Power Saving mode allows you to conserve battery life when not in use