Mfine mini digital Portable Music Player Micro sd/tf USB Disk Speaker Fm Radio (938 Blue) Mini USB Portable FM Radio Speaker Music Player with Rechargeable Li-ion battery Support FM Function, FM Frequency Range 87.8-108 MHZ. Support Play MP3 Format Music or other media content Micro SD Card(TF Card),U Disk. Can play music and use for language study Audio output function Fit for IPOD, MP3, MP4 player, Iphone and other Mobile Phones Easy to plug in your iPod, Smartphone, tablet, laptop and other MP3 player or any audio source that uses a standard 3.5 mm jack