Description <br> Description: <br> With high quality, onboard 2W single channel power amplifier.The 3.5mm gold-plated headphone jack connecet headphones or external speakers. <br> With MicroUSB power supply interface, with mobile phone data cable, using mobile power or USB charger power supply, can also be used 3.7V lithium battery, USB 5V power supply. <br> Convenient to wire and refit; 4 buttons on the board for setting operation. <br> Support MP3 format, playing power on automatically, LED indocator light when module is working. <br> Mp3 lossless decoders power amplifier Mp3 player module Mp3 decoder board support TF card and USB. <br> Support TF Card (mobile phone memory card), U disk playback mode With the speaker terminals without welding. <br> Specification: <br> The Prev/V-- key : short press is switching tothe last song ,long press is for volume decreasing <br> The Next++ key : short press is switching tothe next song,long pressis forvolume increasing <br> The P/P/Mode key :short pressis switching to play / pause, long pressis U disk and TF Card modes selection <br> The Repeat key :short press is switching cyclically single / song (no press function) <br> <br> <br> <br> Power range: 3.7-5.5V <br> Dimension: 45mm*36mm <br> Package Includes: <br> 1 Piece Mp3 Lossless Decoders Decoding Power Amplifier <br> <br> Note: <br> 1 long press time is about 2S. <br> 2 If you use U disk mode, some suggestions of 5V power supply, some U disk doesn’t support 3.7V power supply. <br>