Specam Bluetooth Vibrating Bracelet Caller ID/Time Display For Mobile Phone(Black) This Bluetooth bracelet helps users to operate their phone's main functions on the wrist Answer (via speaker) or hang up the phone, with functions of dialing back. Special designed 2-pin clip on USB charging cable, charges from PC, laptop, or USB chargers. Bluetooth version 3.0, compatible with Android smart phones. Effective distance 5-10M. Time and incoming call display