Sound core menthe 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 Bluetooth 4 0 seamlessly connects to any Bluetooth device A 66ft transmission range and a noise-cancelling microphone enable hands-free calling unstoppable music sound core Mini boasts Micro SD support aux-in jack and an FM radio—so even if your phone stops your music keeps going listen longer sound core Mini supplies you with 15 hours of continuous playtime more than double that of similar-sized speakers so you can listen for longer