1. Bluetooth solution: 5.3 EDR, A2DP, HSP, AVRCP 2. Frequency: 2.4GHz-2.48GHz 3.Power supply voltage: DC 5V 4. Bluetooth receiving function: connect 1 mobile phone 5. Bluetooth transmitter function: connect 1 pair of Bluetooth headsets Description Version: Bluetooth 5.3 Supports Wireless Receiver/Transmitter Wireless Transmission Distance:Ablout 10m Aux Audio Input/Output Colour:Black Material:ABS Package Contents: 1 x Bluetooth Audio Adapter 1 x TYPE-C Power Cable