Wooku Blue Smart Bluetooth Bracelet Lovers Wrist Watch -Best partner of Cell Phones This stylish watch can be used as a ordinary watch, it also has bluetooth function, you can connect it with smartphones.You can use it answer the phone calls, and play mobile music. You can connect it with two smartphones simultaneously. It contains an energy stone, it is good for your health. When the phone is more than 10 meters from the bracelet, bracelet will vibrate, to prevent the phone is lost. It contains 300mah battery which can last 10 days. Available 5V, 1A USB interface charging.