Mp3 lossless decoders power amplifier Mp3 player module Mp3 decoder board support TF card and USB. Support MP3 format, playing power on automatically, playing state red LED indicator update. Super quality, onboard 2W single channel power amplifier. Support TF Card (mobile phone memory card), U disk playback mode With the speaker terminals without welding, convenient wiring Module design and convenient refit. Can be set button. Colour: blue Material: plastic Size: 45 x 36mm Package Content: 4x MP3 Decoder Module 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.