Bluetooth 5.0 Everything is in place New generation Bluetooth 5.0 technology lower power consumption compared to Bluetooth 4.2Rejects bottom noise Eliminate AC interference I hate the buzzing noise of fliesDigital display Reduces damage and lasts longer Intuitive display of operating mode, playback time, broadcast frequency, etc.USB/TF card playback Use U disk /TF card, you can download the songs you want and DJ dance music playback, support a variety of audio formatsTF card port No card holder required Copy MP3 audio files to a U-disk or TF memory card inserted into the correspondinginterface of the amplifier can play music, convenient and fast!Rated voltage: DC12VRated power: 30WX2Rated frequency: 20Hz-20KHzDistortion rate: 0.01%Impedance: 4-8Power amplifier type: expansion amplifierInterface type: USB, RCA TFCardReception method: BT, FMColour:BlackMaterial:aluminumPackage Contents:1 x Host1 x Remote control (built-in CR2025 battery)1 x English 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.