1.Support reading MP3 music in U disk and TF small memory card;2.Built-in Bluetooth receiving function, can receive Bluetooth music from mobile phones;3.For 12V battery, can be charged with DC15V charger,(suggest 15V/2A)4.With AUX IN external audio input function, can be connected to the computer to play;5.The panel has a microphone, which can be used to sing.6.Using word power amplifier, rated power 50W, peak 80W;7.Size: 220x88MM8.The product is mono channel.Colour:blackMaterial:plasticPackage Contents:1 x Amplifier BoardOnly 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.