The ZIZO Rokr Z1 is the perfect companion for all-day entertainment on a weekend camping trip or out on the job site. The speaker comes with a built-in rechargeable battery for hours of playback. Its subwoofer delivers powerful sound for any paired device. High-Definition Sound Rugged Build Recording Function Equalizer Aux Line-in Mic Line-in FM Radio USB Playback Micro SD Playback Rechargeable Battery LED Display Adjustable Controls Built-in Handle Microphone Included Remote Control