Arkons IPM521 Slim-Grip Lighter Socket Mount holder with additional power socket is ideal for use with ALL versions of the iPhone including the new iPhone 4, regardless of whether a protective skin or sleeve is used on the phone. If you are using a Smartphone, particularly with a gps application, Slim-Grip is the stylish, affordable, highly functional, quality cell phone holder that you have been waiting for. It features laterally adjustable support legs and a strong spring-loaded mechanism which securely grips your phone. The Lighter Socket Mount fits into any standard size vehicle power socket for mounting and the additional power socket provided with the mount allows for a car charger to be plugged in for power