WESDAR Bluetooth speakers, Portable Wireless Speakers with LED Lights, build in Microphone and Enhanced Bass, with TF Card, FM Radio for iPhone, iPad, Samsung, Nexus, HTC, Laptops, and More Bk-047 Wirelessly compatible with all Bluetooth-enabled devices Visual experience with LED lights that pulse to your music-wherever you want it to be Built-in Li-Ion Rechargeable Battery-Built-in microphone for hands-free speaker phone calling.Easy to pair The TF card slot and USB allows you to insert your favorite playlists into the speaker and be rocking instantly Big surround sound for a full-range listening experience powered by rechargeable battery