In the upright position, there is a bottom groove, can be set to a thickness of 1 cm in the devices. The surface on which the device is applied here about 5 x 16 cm.
For mobile applications, the bracket is suitable in my opinion, only partly because it is a rigid part that can not be folded. (Was not a requirement of mine when buying)
The surface is not coated and as the entire holder from plastic.
In terms of function and a processing perspective, full 5 stars.
The holder (eg black) also available in other colors