Bluetooth 5.4 Audio Transmitter/Receiver Adapter With TF Card Playback (Black)

1. Material: ABS2. Frequency: 2.4GHz-2.48GHz3. Charging voltage: DC 5V4. Bluetooth receiving function: connects two mobile phones5. Bluetooth transmitting function: connects two bluetooth headsets or bluetooth speakers6. Power supply: DC 5V/1A7. Bluetooth solutions: 5.4 EDR, A2DP, HSP, AVRCP8. Upgrade your old wired home audio system/speakers to a Bluetooth speaker device9. Dimensions: 69x69x20.5mm10. Accessories: main unit, 3.5mm audio cable, RCA audio cable, power cord, instruction manual