Arkon SM521-Micro Universal Slim-Grip Lighter Socket Mount with Micro-USB Power Charger for Smartphone and Cell Phone Voltage Required: 12 - 24 V Voltage Provided: 5 V Designed For: Apple iPhone 3G, 3GS, 4; BlackBerry Bold 9650, 97XX; HTC Aria, Desire S, Desire Z, Droid Incredible, Inspire 4G; Desire S; Incredible S; LG Rumor Touch; Motorola Atrix, Atrix 4G, Backflip, Devour, DROID 2, DROID BIONIC, DROID X No Tools Required Compact portable design Works in most vehicles Provides power to Micro USB compatible Smartphones Works with devices with or without a skin or case