Goal Zero Rockout 2 Speaker

The Rock Out 2 Portable Speaker amplifies tunes from your MP3, phone or laptop for over 20 hours without draining battery power from your device. Compatible with any device that uses an audio output jack. Easy controls on the outside of the speaker, so you can safely store your device in the speaker and zip it away. Recharge by USB or Solar 20+ Hours Run Time Weather Resistant Input: 3.5mm audio jack, line-level MEASUREMENTS 6" x 5" x 3"