There is really not much to say, the shell fits perfectly to the One, no tolerance. All switches and sockets are accessible (as disclosed). Some millimeters Case offers also protection for the display, so if you put it on a table with the display side. Unlike other cases, the One remains slim beautiful. The build quality is good (no clamping or similar) and feels sich..naja just for a plastic case on :) The corrugation is, especially in one-handed use, but beneficial -> Layer easy non-slip.