Easy to install, simply attach the bracket to the rearview mirror. Equipped with sturdy lock knobs which lock to the neck of the mount for sturdiness. Rearview Mirror Car Mount is the perfect accessory for using your phone while in your car. It lets you seamlessly keep all hands and focus on the road while keeping your phone directly in eyesight. Use it to navigate, play music, take calls, the possibilities are endless! 360° Half Spherical Swivel: it can keep your cell phone on horizontally or vertically, side to side Silicone Band straps your devices in placed firmly when driving at a high speed The clamp is firmly screwed to the car rearview mirror, it's adjustable design fits some different sizes of car mirrors Car Rearview Mirror Mount for Mount fits All 4" 5.8" Device.