Block Rocker Explorer Sound System with Bluetooth 50 watts of dynamic power will energize your parties, cookouts and more Extended 75-hour rechargeable battery Powerful 8-inch woofer and wide-dispersion tweeter deliver vibrant sound A USB Charging Port and Wireless Stereo Linking Easily control your Bluetooth music with Play/Pause, Next/Previous Track buttons and AM/FM radio with 6 preset buttons per band