Razer Nabu Smartband (Medium/Large, Green)

Live smarter with the medium/large Nabu Smartband in green from Razer. This activity tracking wristband keeps tabs on the number of steps you walk, the distance you travel, the calories you burn, and the hours you sleep to give you the information you need about your physical activity. This information is sent back to your Android or iOS device over Bluetooth, where you can view, track, and compare your data with other Nabu users.