The Macally MCUPGRAVITY is designed to allow one hand operation to mount your phone onto your cars cup holder. Simply place the phone in the cradle and the grips will automatically close. To remove the phone is just as easy. Press the button to release the grips and remove your phone. The cradle grips open between 60 mm (2.36") and 86 mm (3.39") width to support a wide range of phones, with or without protection cases. The soft cushioning on the holder provides a secure grip and protects your phone from scratches. The 6,3 cm (2,5") adjustable neck and 360-degree rotatable holder bring your phone within reach and offer the best viewing angle. Finally, the expendable base fits car cup holders with a width of 64 mm (2.5") to 101 mm (4"). The Macally MCUPGRAVITY is ideal for handsfree phone calls and for navigation without obstructing your view while you drive!