Unique Auto Cigarette Lighter and USB Charger Mounting System Includes Adjustable Holder for the Sirius StarMate ST2 Connect your Sirius StarMate ST2 to the mount via the universal USB power dock and charge a second device from the 12V receptacle. Expandable bracket/cradle holder for the Sirius StarMate ST2 easily accommodates 48 x 128.1 x 19.4 mm. Shock-absorbent foam inserts on the bracket/cradle holder Specifications: Cigarette Lighter mount (weight 3.5 oz., dual charger size 2 Cigarette lighter mount provides full access to your Sirius StarMate ST2 controls while you charge your device.