The Muse K1 case from GMC is so feature packed that it has made for my longest review yet, and even after this review there are still features of the case left un-shown. Before reviewing this case I wasn’t so keen on it. But since I have used it, it has really grown on me. The extensive feature set surprised me time after time, and I was pleasantly surprised on more than one occasion when I would enter a different mode on the software and find a new use for the buttons and display on the front of the case.