ID115 Smart Fitness Tracker Band Bracelet Bluetooth: 4.0,Battery: 50mA polymer lithium ion Charging time: Storage temperature: -20 to 60 Support: IOS 7.1 and Android 4.4 or higher. Synchronization range: 3m (theoretical rank is 10m without interference). FUNCTIONS: Heart Rate Monitor,Pedometer,Calories Counter,Distance,Sleep Monitor,Camera Remote,Alarm Alert,Time Clock,Anti-Lost,Phone Finder. Feature: 1. SMS,information,call reminders. 2. Bluetooth synchronization. 3. Data synchronization does not require cable. 4. Remote camera,take photos by phone by the remote control of the bracelet. 5. Activity tracker,take your daily activity: steps,distance,time,calories,Check and share your data at any time. 6. Anti-lost,the bracelet will remind you with vibration,if your phone is 5m away from you. 7. If the Bluetooth is disconnected or the phone is off the Bluetooth distance,the clock will alarm you. 8. Sleep monitor,check sleep trend table to get your sleep time and quality. 9. Sitting reminder,it reminds you to go out or exercise after a long time sitting. 10. IPX7 Waterproof,smart wristband of water (Not for swimming or under the shower). 11. Heart rate monitor and sphygmomanometer. 12.Direct Charging From USB.