Simple and efficient hull, is the display. If fits perfectly on the Lumia 520 and retains the same design as the original hit. Leaves appear every orifice available, even the small micro barely visible at the bottom. The buttons on the 520 is not too prominent, it becomes quite difficult to press buttons in their recess. At least accidental pressing (including camera) are no longer a problem. I wanted a softer shell to better absorb shocks in case of fall, for that I remove a star. The price finally is user friendly. PS: on the hull of lumia Black version, the contact points with the cover at the rear give the impression that there is water for the maniacs of the perfect design, you are warned.