The etón Rugged rukus Solar-Powered Sound System is an all-terrain, solar-powered, music-blasting wireless sound system. Its incredible solar panel generates massive amounts of power to play your music. After dark, the internal lithium battery will keep the music going for up to eight hours or more on a five-hour charge. AC powered, or use the micro USB cable with your smartphone charger for nonstop power. Stream from any Bluetooth-enabled smartphone, tablet or computer and control your tunes from your device. There are no wires or docks to get in the way. One-touch pairing gets your music started in no time. A USB port let's you charge your mobile device while you listen. Splashproof. Dimensions: 6.5"L x 5.9"W x 1.8"D.