1. Newly upgraded Bluetooth audio receiver, Bluetooth 5.2 chip, compatible with most smartphones. 2. Digital to Analog converter,with coaxial input,3.5mm audio+R/L output,use it on your TV, connect it to amplifiers or players to play audio. 3. U disk play,support MP3.WAV,FLAC,APE,WMA music format.Up to Max 64GB memory card. 4. With Microphone input,external microphone can be connected to the speaker and sing to . 5. Support IR remote control,free your hands and make operation more convenient(Please Note:it not support Power ON on the remote control). Product Name:Multi-function Bluetooth audio receiver Product model:A1 Bluetooth version:V5.2 (QDID:181186) Support portcol:RX:A2DP/AVRC Frequency range:2400-2483.5MHz Sensitivity:-90.5dBm @ Transmission distance:Barrier-free about 10m Signal-to-noise ratio: equal 90db Audio Interface:"Support flexible audio EQ adjust;Support Sample rate 8, 11.025, 12, 16, 22.05, 32, 44.1 and 48KHz" Receiving mode:"Connect the audio playback device of the wired device to receive the Bluetooth signal for wireless playback" Product Features:"Receive/coaxial input/MIC input/AUX output/RAC output/USB disk" Use method:Support IR remote control,easy to operate U disk play:support MP3.WAV,FLAC,APE,WMA music format. Up to Max 64GB memory card. Power supply mode:Type-C interface Input parameters:DC 5V equal 500mA Battery:No built-in battery Due to different batches, there may be differences in product appearance and printed text, which not affect use. Colour:Black Material:Aluminum Alloy Package Contents: 1 * Bluetooth Converter 1 * 3.5mm audio cable 1 * audio cable 1 * USB Charging Cable 1 * IR Remote Only 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.