adsen(TM) L6 Smart Watch Bracelet Bluetooth Waterproof Wireless Activity Sleep Wristband TPU Band Smart Sport Tracker (Blue) You can answer your phone or reject it directly on the bracelet by a button; which makes the voice calls rapid and convenient. Vibrating when your call incoming, it won't let you miss any calls. Extreme technique design, pairing with Bluetooth anytime, it's a perfect fashion partner for mobile phone. Time display and display the number of incoming calls. APK, used for reading synced SMS only works for Android phones, should be download to your phone in advance.