Goal Zero 94015R Rock Out 2 Solar Rechargeable Speaker, Teal (Certified Refurbished) This Certified Refurbished Product is a manufacture refurbished, shows limited or no wear and includes all original accessories plus a 90-day warranty Built with a weatherproof outer shell to withstand all Mother Nature can throw A roomy, fabric-lined pocket keeps your gear safe inside; the attached bungee lets you strap your speaker anywhere Dark Bass chamber allows massive airflow for deep, precise sound without the bulk; Chainable with other Rock Out Speakers for a bigger, louder party Built-in solar panel and advanced battery engineered to provide long-lasting stereo sound; Charge it on your hike, jam out by the fire Also charges fast from USB; Advanced Bluetooth enabled