Nuband evolve takes activity tracking that step further. Using its custom chip, the band can now track a variety of popular sports you are not just limited to walking and running. Features include an activity and sleep tracker, OLED display and a multi sport tracker for swimming, running, cycling and weights. You can set time and date via connection to the free app and it features multiple alarm settings from sedentary alerts to gentle daily alarm clock features. It is also IPX7 water resistant. Wireless connectivity. Lightweight and discreet. Extension ankle band included. Multi sport tracker and sleep quality tracking. Swimming sport tracking. Connectivity MB memory. Multi-platform operating system. Bluetooth 4 connection. USB 2 connection. Display information 23.11mm AMOLED screen. Battery 70mAh battery capacity. Typical usage time of up to 7 days. Low usage time of up to 7 days. 3 hour charge. Physical specification Size: one size. Watch size H38, W15, D10mm. Strap size L230, W14, T2mm. Weight 27g. Features Water resistant. Swimproof. Dust resistant. Pedometer. Distance. Accelerometer. Calories. Sleep. Accessories included: USB charger Cable, including charger.