Smart Bluetooth watch bracelet applicable for every brand bluetooth mobile phone (Silver) Bluetooth bracelet with OLED caller's ID display The bluetooth bracelet can be applicable for every brand bluetooth mobile phone. The Bluetooth bracelet vibrate when distance on watch and mobile phone is more than 5-10M When not in use it can perform as a bracelet with special design After pair with the mobile phone, the bracelet will remind you by vibrate while receiveing a call.