With high quality, onboard 2W single channel power amplifier.The 3.5mm gold-plated headphone jack connecet headphones or external speakers. 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. Convenient to wire and refit; 4 buttons on the board for setting operation. Support MP3 format, playing power on automatically, LED indocator light when module is working. Mp3 lossless decoders power amplifier Mp3 player module Mp3 decoder board support TF card and USB.