RAYEE K8 Remote Control Version 2 in 1 Bluetooth 5.0 Receiver & Transmitter Audio Adapter Support Fast Charge U Disk, US Plug 1. Material: PC, ABS 2. Usage: 110V power supply in-line 3. Transmission rate: 2.40Mbps 4. Bluetooth transmission distance: about 10 meters 5. Bluetooth version: 5.0 6. Working frequency: 2400MHz 7. Interface type: 3.5mm interface 8. Output parameters: DC 5V2.1A 9. Support protocol: A2SPAVRCP 10. Remote control power supply: contains a button battery 11. Scope of application: notebook computers, desktop computers, projectors, televisions, subwoofers, small speakers, power amplifiers, wired headphones and other devices with audio inputoutput interfaces 12. Packing list: host x1, remote control x1, audio cable x1, manual x1 13. Size: about 7.5x5.5x2.5 cm 14. Weight: about 54g Features: 1. Using Bluetooth 5.0 chip 2. Support Bluetooth receiving (RX) and Bluetooth transmitting (TX), two functions in one 3. Both receiving and transmitting modes can be played by plugging in U disk, supporting mp3flacwavwamape and other formats 4. Mobile APP control, up and down songvolume adjustmentsound effect adjustmentplay source switching 5. Support 110-220V power supply in-line, universal 6. Built-in QC2.0 fast charging module, supporting 2.1A dual USB fast charging, easy charging for mobile phones, tablets, etc. 7. Support 5-10m infrared remote control, switch onoffmuteplaypauseupdownupdownvolume updownswitching of sound source 8. Built-in high-quality decoding chip, high-definition stereo sound quality 9. Intelligently compatible with various devices, plug and play, suitable for devices with audio inputoutput interfaces 10. Ultrasonic assembly process can effectively prevent falling and effectively prevent over voltage, over current, short circuit, electromagnetic, over temperature, over power, etc. 11. Highly sensitive infrared remote control, about 5-10 meters infrared control, the remote control panel is simple and clear, and a variety of functions are controlled by one butto