This component is a circuit board for a mini MP3 player, commonly sold in budget DIY kits

This component is a circuit board for a mini MP3 player, commonly sold in budget DIY kitsIt features a MicroSD (TF) card slot for storing audio files and a 3.5mm earphone jack for audio output.The board includes a

USB port for charging data transfer, a power switch, and requires a small LiPo battery to be connected to the red and black wires.