OSOYOO Black Wireless Foldable Headphone Headset Mp3 Player Fm Radio Tf Card Slot Sport MP3 Earphone Music Player LCD Mirco SD Card Slot Headphone Foldable Wireless FM Radio Headset Lightweight, Portable and folding design, convenient to carry Built-in FM function and TF/Micro SD card slot. 3.5mm jack audio output common port, MP3 music output to other audio equipment