Activity and Sleep Tracker; Offer healthy sports guides; Motivate you to get your desired goal; Compete and share the data with your friends via facebook/twitter; Make friends with sports companions; Get fulfilled in the increasingly better progress; Bluetooth sync with all the info is collected and stored in real time; Compatible with iOS and Android; Vibration function(optional); Charge one time can support about 1 month. FOB Price:US $15.5 - 18.5 / Piece | Get Latest Price Min.Order Quantity:1000 Piece/Pieces Supply Ability: 300000 Piece/Pieces per Month Port:Shenzhen