Features: Connect two Bluetooth-compatible devices at once to listen to music, make phone calls, and more. It can fast and stable transmission without tangling. The Bluetooth-compatible audio receiver supports broadcasting voice notification from navigation Apps. You don'for t have to look down the phone on the move. Make sure you drive safely This Bluetooth-compatible audio adapter works up to 8 hours when you make phone calls or for play music, so convenient. Specifications: Material:ABS+PC Color:Black Size:50x11.5x48mm/1.97x0.45x1.89in Bluetooth-compatible Version: V 5.0 Weight: 12.6g/0.44ounces Battery capacity: 145mAH Frequency Response:50Hz-20KHz Music Playback time: 10hours Charging:Micro USB DC5V/100mA Operating Range: up to 33 feet (10 meters accessibility) Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Bluetooth-compatible Receiver 1x Cable