iFun4U Stereo Bluetooth Speaker, Mini Portable Wireless Speaker with Microphone, Micro SD MP3 Player TF Card Reader, FM Radio, for Smartphones/Tablets/PC Two built-in speakers offer full high-definition stereo sound and passive subwoofer providing excellent bass. Enjoy your music in Full-bodied stereo realized through Dual High-performance Drivers and a unique Bass Passive radiator. Support FM Radio;Support Micro SD music playback; Support data access on the TF card; Support USB sound card play Built-in mic for handsfree call, sd/tf card play supported without any device, works with virtually any Bluetooth-enabled device (Smartphones, Tablets, PCs, MP3 Players, Cars, Computers etc.) Compatible with all Bluetooth-enabled devices. Instantly connect to your smartphone from up to 66 feet away. It reconnects automatically to the last device used.