Musicfly by poweradd.

Let me start off by saying I would compare this speaker to any Bluetooth speaker made by Bose. I just can't believe the base quality of this device it is Extreme. And what's even better is that it has a built-in USB port so you can charge your phone at the same time. This is definitely not a small Bluetooth speaker it feels heavy and is rubberized All Around Its definitely heavy duty. I was so excited to get the speaker in from Amazon I couldn't wait to open it. Just stays on my desk at work all the time now and no one is allowed to touch it, it is my baby LOL. The rope handle on the side gives it an fun and carefree feel.