NAXA Electronics NAS-3071GY Boomer Portable Bluetooth Boombox & MP3 Player A portable and powerful Bluetoothspeaker system with built-in MP3 player and FM radio Dedicated subwoofer and powerful twin drivers deliver sound that moves you Stream music wirelessly from Bluetoothdevices or connect with the included 3.5mm AUX audio cable Play MP3s from USB memory sticks and microSD memory cards Power: Rechargeable battery, USB charge