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 practical Wide 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, etc Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Power Supply: 7-12V PCBA Size: Approx. 65 * 29 * 13 mm Opening Size: Approx. 67.5 * 24 * 29 mm Screen Size: Approx. 30 * 6 mm Package List: 1 Set 12V MP3 Decoder Board