Efanr 2015 Water Resistant Bluetooth Smart Watch Bracelet Exercise Smartwatch Running Wristbands Sports Watches Luxury Fitness Health Tracking System Wrist Watch Women Men Cell Phone Mate Partner Pedometer Step Walking Calorie Counter Activity Tracker Sleep Monitoring Anti-Lost Sedentary Drink In-call Reminder for Android 4.3+ IOS 6.1+ Smartphones, Compatable with Apple iPhone 6 Plus 5S HTC One M8 Lenovo Nokia Lumia One Plus One Oppo Xiaomi Sony Xperia Z3 Huawei LG Nexus Samsung Galaxy Note 4 S6 (Yellow) Compatible with: ios 6.1+ version, Android 4.3+ version; Not suitable for Swimming TW64 will record your step, distance and calorie, which can help you to set the target Smart reminder: In-call reminder, sedentary reminder, drinking reminder, wake up alarm etc Help you to keep a good habit, health and happiness follow you. Main Function: Passometer, Distance measuring, Calorie consumption management, Sleep management, Event trigger, Clock, Sedentary reminder, Anti-lost, Remote camera, Vibration alarm clock.