Upgrade your car with our Bluetooth 4.0 Car MP3 Player, engineered to support Bluetooth calling, music transmission, and caller identification for a safer driving experience. Designed with a built-in TF Card / U disk player and card reader function, it allows for versatile music entertainment supporting MP3/WMA format music. Comes with a powerful double USB charging port rated at 2.1A that can charge all your devices, including mobile phones, tablets, and other electronic gadgets on the go. Features a user-friendly 1.3 inch LED dot matrix screen, providing you with vital information like frequency point, file name, and working state at a glance. Offering a one-key menu system for setting language, playback mode, and sound mode, it's the ultimate blend of functionality and convenience.