The holder is suitable for all flat devices with a width of 2.1653 to 3.346" and a height of 5.118 to 7.086". The depth of 15 mm is also suitable for smartphones with a thick cover or case. The operation is quick and easy. A quick-release button on the back with a latching mechanism unlocks the rubberized clamps and the smartphone can be easily removed. Thanks to the ball joint, the holder can be tilted up and down and rotated 360°. The flexible support arm provides additional individual positioning. A sturdy clamping element with user-friendly wing nut enables quick mounting on any tube with a diameter of 0.393 to 1.181".