The main function of Sbracelet include viewing the amount of exercise, monitoring sleep quality , smart alarm free and etc . We can use the mobile applications to check the amount of exercise , calorie consumption , effect of walking and running in time . When Sbracelet enter into the sleep state, it will record deep sleep & light sleep and summarize the total sleep time ,helping users check their sleep quality . Because of this application needs back-end call reminder , the backstage always been in a call state.