Features:Support: USB 2.0 and Micro-SD card interface. Support U disk, TF card, playing MP3 files.Electronic clock and adjustables-LIN (can control AUX-input volume)With FM radio & memory function. With digital LED display.DIY Production: This decoder board can be used for DIY design. It can be used for secondary development and application of other devices, circuits, modules, and is very practicalWide Applications: This MP3 decoder board is widely used and is very suitable for audios, controllable player, consumer electronics, industrial applications, toys, gifts, fitness equipment, broadcast systems, etcNotice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementDescription:Power Supply: 7-12VPCBA Size: Approx. 65 * 29 * 13 mmOpening Size: Approx. 67.5 * 24 * 29 mmScreen Size: Approx. 30 * 6 mm