RuvTech 360 degree flexible gooseneck rotating clamp gives you virtually any viewing angle while driving your vehicle. Compatible with almost all the size of the mobile phone screen 3.2"-6",open max=90mm, which secures your iPhone, Samsung, HTC, blackberry, and other electronic devices tightly prevent your device from falling or moving around. • RuvTech 360 Degree Flexible Gooseneck Rotating Clamp gives you virtually any viewing angle while driving your vehicle. Compatible with almost all the size of the mobile phone screen 3.2"-6",Open max=90mm, which secures your smartphones, including iPhones, Samsung, HTC, Blackberry, and other electronic devices tightly prevent your device from falling or moving around. • Cup that allows for supreme ease mounting on the windshield • Long Flexible arm allows for easy positioning,and bring the phone closet to the driver.You can keep your eyes up instead of looking down at your phone. • Silicon lines and firm grip keeps your phone safe and secure. Hot temperature resistant, Compact design, Easy to install, no tools required, with retail package • RuvTech Trademark Product