Arkon's SM521-Micro Lighter Socket Mount with Micro USB power features the NEW Slim-Grip holder and is ideal for use with Smartphones having a Micro USB power connection such as Samsung Galax S phones, Smartphone's with slide out keyboards like the Motorola Droid, Superphones like the EVO 4G, HTC HD2, HTC Desire Z, Droid X and devices like the BlackBerry that have keys and buttons on the side of the device. The Slim-Grip will hold your phone regardless of whether a protective skin or sleeve is used. If you're using a Smartphone, particularly with a gps application, Slim-Grip is the stylish, affordable, highly functional, quality cell phone holder that you've been waiting for. It features laterally adjustable support legs and a strong spring-loaded mechanism which securely grips your phone. Recommended for hands-free calling and GPS navigation. The lighter socket mount has an integrated Micro USB connection that provides power to your device while securely mounting it in place eliminating the need for an additional car charger.