You can place or take the phone with one hand when driving, easy to adjust the cellphone to a horizontal or vertical screen. It is convenient to answer the phone, play music, GPS positioning during the riding, let you use it safely. FIRMLY LOCKED AND STABLE The phone holder adopts a retractable Four-claw design on the left and right sides, grips each corner of your phone tightly, and prevents dropping. Well-balanced keeps stable no matter The rotary design makes it fold easily, the arm length can be retractable by 2.16''