ITEM NAME:Mp3 Decoders Board 3.7-5V Power 2W Amplifier Player Audio Module f TF Card Description: - 3.7 Lithium battery or USB 5V can be.3.7 Lithium battery or USB 5V can be powered with 2W mono amplifier. 1 piece TF card MP3 decoding module. - V50REG VMCU/BAT lithium battery input, 3.3V~5V. - Support MP3 playback format. - The GPD2846A is a chip designed for MP3 players with FM radio and LineIn functions.