Very good car windscreen mount of mumbi. But can not be used with a protective sheath. The sucker keeps awarded to the disc. The Sony Xperia Z has a secure grip. During the trip, there is no vibration of the smartphone in the holder. To read the display while driving on rough roads is good. The 360 ° rotation of the bracket is good.The minimum clearance of finding does not while driving a negative impact. I would buy this car holder again. Sellers can be recommended calmed down.