Digital Display Bluetooth 5.3 Audio Receiver Transmitter Support USB TF Card MP3 Player 1. Wireless frequency: 2.4GHz 2. Working time: up to 5 hours 3. Bluetooth compatible version: 5.3 4. Bluetooth compatible transmission distance: up to 10 meters in an open area without obstacles 5. Working voltage: DC 5V 6. Power supply mode: external power supply 7. Power supply mode: Type-C interface 8. Interface type: AUXdual channelU diskTF card 9. Basic functions: Bluetooth compatible receptionBluetooth compatible transmissionU disk playbackTF card playback 9. Supported equipment: mobile phonestabletscomputersTVsspeakers, power amplifiersprojectorsmixers and other devices with audio inputoutput interfaces 10. The transmission mode is suitable for: Bluetooth compatible speakers, Bluetooth compatible headsets, desktop computers, notebooks, TVs, projectors, set-top boxes 11. The receiving mode is suitable for: various speakers, car radios, power amplifiers, mobile phones, tablet computers 12. Product size: about 67x50x20mm2.63x1.96x0.78 inches 13. Product net weightgross weight: 38g118g 14. Receiving + transmitting in one: TX transmitting mode, computerTV upgrade Bluetooth compatible, easy to connect Bluetooth compatible earphonesspeakers, solve the problem that TV cannot connect Bluetooth compatible earphones; RX receiving mode, easy to connect mobile phonestablets, old speakers The Bluetooth compatible function of the power amplifier can be connected to the audio interface of the old speaker or power amplifier to solve the problem of incompatibility with Bluetooth and the inability to use Bluetooth compatible playback 15. Multi-function knob: support power onoff, playpause, answer calls, end calls, reject calls, re-search, increase and decrease volume, CD-level high-definition lossless playback, HIFI high-definition decoding output, restore sound details, just like live music scene 16. Rich interfaces: meet the needs of different devices for AUXdual-channel RCAU diskTF card, meet the ne