Usage Tips:Adopt Bluetooth 5.3 chip design, stronger compatibility and stability.Built-in 6.5mm high-definition microphone, which supports microphone access for singing,suitable for karaoke, lossless transmission, live theater music effect, family KTV karaoke more carefree and happy.Support U-Disk playback,Enjoy lossless sound quality experience, Plug and play, lossless transmission, built-in HD audio decoder, easy to read various audio format files, support MP3/APE/FLAC/WMA/WAV format.Support IR Remote Control, 5-10M barrier-free wireless control,Supports volume adjustment/signal switching/song switching, making the operation more convenient and faster. (NOT SUPPORT POWER ON)With external antenna,enhance signal, can barrier-free transmission distance.No Delay, lossless decoding technology, enjoy HIFI sound quality.Powered By USB Charging (No built-in battery ).Product Name: Multi-Function Bluetooth Audio Receiver AdapterAudio lnput Interface: Coaxial/6.5MM MIC/USB U-Disk/3.5MM AUXOutput Interface: 3.5MM AUX/R-L RCA Bluetooth Protocol Support: A2DP/AVRCP/HFP/HSP Frequency Operation Mode: key switching, Knob adjustment, remote controlUSB U-Disk Support: WMA/WAV/FLAC/APE/MP3, etcBluetooth Decoding: SBCBluetooth Version: V5.3Bluetooth Distance: 15 metersCore Functions: Bluetooth Audio Receiver+U-Disk Playback+6.5MM Microphone Interface lnput(For KTV Karaoke Singing)+IR Remote ControlColour:BlackMaterial:Aluminum AlloyPackage Contents:1x T500 Bluetooth Audio Receiver Adapter1x Remote Control(With battery)1x 3.5MM Audio Cable1x RCA Audio Cable1x Coaxial Audio Cable1x Typc-C Power Cable1x English User manualOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.