Meet the DemerBox: a rugged Bluetooth boombox you can take with you everywhere you go. The device is compatible with your smart devices and offers you great sound on the go. It is water resistant and shockproof. The battery provides you with up to 40 hours of play time on a full charge. The developers are offering multiple models on Kickstarter. The Bang is the single speaker model that is about the size of a lunchbox. The Big Bang has two speakers and is almost the same size as a soccer ball.
DemerBox looks decent and can survive your outdoor trips. It is water resistant too. You just have to insert the port plug to keep the water out. The Bang and Big Bang are going for as low as $199 and $299 respectively, but you need to be an early Kickstarter supporter.