1.Bluetooth receiver adapter,supports to pair with mobile devices (such as mobile phones, tablets) via Bluetooth for audio transport.Make the older speaker devices work like the Bluetooth devices2.Bluetooth transmitter adapter,you can use it on the TV/computer /TV box/PS/Switch3.DAC converter,supports signal conversion from digital optical coaxial audio to RCA 3.5mm or R/Lanalog audio4.U Disk play,no need driver,plug and play ,support MP3/APE/FLAC/WAV/WMA music format5.Remote control,you can use the IR remote to control the adapter,easy to use.With external antenna,enhance signal, can reach 30M barrier-free transmission distanceProduct name: DAC Bluetooth Audio Receiver Transmitter ConverterBluetooth version: V5.1Audio Interface:Coaxial,Optical Fiber,USB U-Disk,3.5MM AUX,R/L RCAInput power: DC 5VTransmission distance: 30mPower supply mode: Type C interfaceNOTE: Powered By USB Charging (No built-in battery )Colour:blackMaterial:plasticPackage Contents:1 x Audio Receiver TransmitterOnly 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.