The indestructible DemerBox Outdoor Bluetooth Speaker will be your go-to travel companion on your next outdoor adventure. Designed to brave any outdoor environment – water, rain, hail, dirt, sand, heat or snow. The DemerBox can hold a charge for 40+ hours. Includes an internal USB device charger and Bluetooth pairing. Each speaker is built into a crushproof Pelican case providing unmatched durability. DemerBox is a waterproof case that opens to keep valuable items like your wallet, keys and phone safe and dry inside.