----The main function of NFit - Smart Band---- 1. Includes checking exercise, sleep quality, the state of the heart rate monitor, a smart alarm clock to wake up, APP message alert. 2. etc.Application through physical activity and calorie consumption, monitor the effect of walking and running. 3. When NFit sleep monitoring, recording deep and shallow sleep, sleep, sleep help users monitor their sleep quality. 4. Because the application needs to remind background, it has been running in the background. 5.This app may use your location even when it isn’t open, which can decrease device battery life 6. Connect to synchronize data to Apple Health (HealthKit), to achieve data movement, data and consumed calories sleep simultaneous recording to Apple Health (HealthKit)