ION Road Rocker Compact Portable Speaker System with Auxilliary USB Charger Ultra-portable loudspeaker system with integrated rechargeable battery and wired/wireless connectivity, compact Stream music wirelessly from any Bluetooth-enabled device Works with iPad, iPhone, iPod touch, Android, the latest Kindle tablets and more Input for a microphone, instruments and other audio sources Up to 50 hour battery life per charge with integrated USB port lets you use the Road Rocker's battery to charge your smartphone or tablet Full-range audio; woofer and tweeter work in tandem to provide rich, full acoustics Perfect for road trips to the beach, dorm rooms, parties, BBQ's and more