Waterproof, Portable, and Rugged Outdoor Bluetooth Speakers. Loud Sound, Deep Bass, 40+ hr Battery Life WATERPROOF AND PORTABLE: Includes a Port Plug that installs quickly to become fully waterproof. Every DemerBox is a waterproof case that opens to keep valuable items like your wallet, keys and phone safe and dry inside. Never worry about rain at your backyard party or the speaker falling overboard again! Plus, the compact size and light weight makes it easy to take anywhere. MADE FROM A GENUINE PELICAN CASE: Built in a crush-proof Pelican case, DemerBox lasts an incredible 40 hours between charges. Plus, it has internal USB charging to keep your devices juiced up for your entire adventure! Its rugged and durable construction is designed to brave any outdoor environment – water, rain, hail, dirt, sand, heat, snow! BUILT TO LAST: You don't like adding to landfills and neither do we. That's why we built a fully serviceable speaker designed with sustainability in mind. In the unlikely event there's an issue, DemerBox can fix it. GLOBALLY TESTED, AMERICAN MADE: Each DemerBox is handbuilt in the USA and was developed from extensive durability tests on every continent and environment imaginable. Wherever you go, DemerBox has been there! DemerBox lasts an incredible 40 hours - giving you the freedom to roam between charges.Battery: 2600mAh Lithium Ion @12.6v. 40+ hours play time between charges.Battery life depends on audio volume, ambient temperature, charging habits & USB charge port usage.Charge Time: Approximately 4 hours to full when battery is depleted.Volume: Up/Down switch