T-2020 Fashion Portable Mini Speaker with FM/TF Card Slot/AUX-In - Blue Convenient to use, easy for carrying. A good partner for you to enjoy nice music Compatible with MP3/MP4/Phone/PC and any other music player device With a TF card slot, supports TF card up to 16GB. With FM and AUX-in function With standard USB and 3.5 mm port. With turn on/off switch on the bottom Volume can be adjusted