Dual USB / 12V Charger Car Cigarette Lighter Mount and Holder for the Magellan Maestro 4000 Connect your Magellan Maestro 4000 to the mount via the universal USB power dock and charge a second device from the 12V receptacle. Shock-absorbent foam inserts on the bracket/cradle holder Expandable bracket/cradle holder for the Magellan Maestro 4000 easily accommodates 109.1 x 88.3 x 22.7 mm. Portable design makes transporting between cars effortless and hassle-free. Specifications: Cigarette Lighter mount (weight 3.5 oz., dual charger size 2