Track your steps and stay motivated to move with the Casio G-Shock GBA900 Step Tracker watch. It lets you set daily goals and easily check your progress to help you keep going. 3-axis accelerometer tracks your steps and can measure distance while linked with the GPS function of a smartphone via Bluetooth Once you take measurements with a smartphone, the next time you will be able to measure distance with the watch alone Distance and running time measurements are used to calculate your pace, and an auto lap feature automatically records the time it takes to cover a specific distance Check your activity history by linking with an app running on your smartphone; the app also helps to simplify the configuration of watch settings and training management 5-level exercise intensity graph and a daily goal attainment rate help keep you motivated Super Illuminator keeps the watch face easy to read, even in the dark Soft urethane band material improves the fit to the wrist, and vent holes improve breathability Watch connects with your phone via Bluetooth to support auto time adjustment, phone notifications, step tracking and other functions throughout the day Other watch features included stopwatch, 5 daily alarms, countdown timer, world time and full auto calendar Battery life is approximately 2 years Water resistant to 200 m Shock resistant