Polaroid Rugged Wireless Portable & Rechargeable Bluetooth Speaker, Made of Wood with Carry on Strap (Blue) Multi-Connect - Use a compatible device to play and control music via Bluetooth wireless, or use an aux-in cable (included). Carry On - Grab a hold of the carrying handle to take the speaker from place to place. Rechargeable - Attach the included USB cable to recharge the speaker through any USB port. Knock On Wood - The speakers wooden cabinet produces dynamic quality sound. Bumper to Bumper - Rubber bumpers on the speakers corners add a rugged element to the speaker.