Features: 1.Stable Transmission: Adopt bluetooth 5.0+EDR, the frequency is 2.402?2.480GHz, transmission distance is 10M straight line, with DSP technology and A2DP function. 2.Aux Bluetooth Adapter: Connect bluetooth connector to AUX interface through adapter, you can talk and listen to dynamic music, so that your journey is no longer lonely. 3.High Quality Material: Car bluetooth audio receiver is made of high quality ABS material, wear resistant, high toughness, sturdy and durable. 4.Multifunction: Car wireless audio adapter supports multiple function, such as bluetooth hands?free phone calls, mobile navigation, lossless music, etc. 5.Easy Operation: Easy to use, lightweight and easy to carry, convenient and practical, no complicated operation is required, save your time and energy. specification:Item Type: Bluetooth Adapter Material: ABS Bluetooth Version: 5.0+EDR Charging Voltage: 5V Bluetooth Frequency: 2.402-2.480GHz Working Hours: 8-10H Built In Battery Capacity: 300mAh(including) Charge Time: 2H Bluetooth Microphone Effective Distance: 0.5-2M Bluetooth Transmission Distance: 10M straight line Bluetooth Voice Processing: With DSP technology /A2DP function PackageList:1 x BluetoothAdapter 1 x Plug 1 xType C Charging Line 1 x User Manual