Quick Release Button: Press button on back of unit to slide open and then take out mobile phone. Press the arms on both side to clamp mobile phone again, simple of operation, save time and power. 360 Degree Rotation: The fully 360-degree rotation provide you with the best viewing angle.The holder ensures safe driving whether you are talking, navigating, listening to music or charging. Broad Compatibility: Passed a wide range of tests, fit for most cellphones, iPhone 7 7 Plus iPhone 6s Plus, 6s, 5s, 5c ,Samsung Galaxy S6, HTC,LG, Nexus, Nokia, GPS Device. Sturdy, cradle-less and attractive device holding system.suitable for width size from 1.9 inch to 3.7inch smart phone or electronic devices. Single-handed Operation: Simple installation and removal of smart phones. Simplistic Installation, Single-handed Operation, No Tools Needed.