I7s Single Wireless Bluetooth Earphone White

1)Caller ID, the last call back, all intelligent English voice prompts, boot, pair, shut down the phone power will be low voice prompts 2)phone power display, you can always watch the headset power situation, do not worry about the headset no electricity to make your life worry; 3)Intelligent compatibility: support all with Bluetooth mobile phone, all the mobile phone 5)UPTO 1-3 Hours backup