The Mini Bluetooth Speaker with Superior Sound From ANKER, the Choice of 20 million+ Happy Users Industry-Leading Technology ~Compact And Powerful: Super-portable Bluetooth speaker with incredible sound quality. A 5W audio driver and passive subwoofer ensure you get crystal-clear sound and powerful bass from a speaker you can literally take anywhere. ~Advanced Bluetooth Technology: Bluetooth 4.0 seamlessly connects to any Bluetooth device. A 66ft transmission range, and a noise-cancelling microphone enable hands-free calling. ~Unstoppable Music: SoundCore mini boasts micro SD support, AUX-in jack, and an FM radio—so even if your phone stops, your music keeps going. ~Listen Longer: SoundCore mini supplies you with 15 hours of continuous playtime, more than double that of similar-sized speakers, so you can listen for longer.