MTDELE 5Pcs Small Amplifier TF Card U Disk Play MP3 Decoder Player Module Micro USB 5V Power Supply with Audio Amplifier
Small Amplifier MP3 Decoder Player Module：5Pcs TF Card U Disk Play MP3 Decoder Player Module
Size：45*36mm
Volts：3.7-5.5V（Use USB flash drive mode, 5V power supply recommended）
Superb sound quality: on-board 2W mono amplifier (5V power supply up to 3W)
Playback: automatic playback on power-up, red LED indicator updated during playback status