We like storing music on our smartphones and play it using an easy-to-operate and convenient on the go speaker. There are a few wireless speakers on the market, but if you want a full wireless audio experience via Bluetooth 4.0, you should probably consider the Big Turtle Shell Bluetooth Wireless Speaker by Outdoor Tech. It is a rich in feature wireless speaker designed for “Go Anywhere” music listening. Powered by a rechargeable Lithium Ion battery that gives 16 non-stop hours of music playing, furthermore, it also serves as a power bank for your other devices. The Big Turtle Shell is created to be the greatest, shock proof, water resistant and rugged wireless speaker bringing impressive 110 decibels of auditory bliss. Features include an integrated microphone and external controls for tracks and volume adjustments. This portable speaker has strong handles for mounting and carrying things. To sum things up, the Big Turtle Shell is the unmatched ultra-loud speaker that is ready to go wherever you go.