The transparent-white Cover by Mumbi is quite discreet because of their transparent side walls therefore. All major gaps exist: for the mini-USB port with SIM card slot, wrist strap, headphones, phone microphone, camera lens, and the main front of the device remains open anyway. So you can produce important cable connections and has the smart phone still well protected inside the handle. Unfortunately, this Z2 in the envelope do not get stuck in the SONY magnetic docking station, but the whole is then too thick and the contact would be yes then still under the silicone. But here you have to decide whether charging station without cover or side USB-charge, which functioned with the shell is flat. The milky-transparent back is rough and has quickly found after a few painting and unpacking of the phone system for fleets create the protective covering. The on / off button, the volume rocker and the camera shutter are protected under the cover, but these switches react all still perfectly on my operation. The drop on some rougher ground gives me no headaches, and also the envelope in his pocket felt good at protecting of the device. So I can recommend this very protective sleeve, for me and my needs it is just right.