Dual QC 3.0 Quick ChargingThis RV USB charger comes with 1 USB Type A + 1 Type C of QC 3.0 Quick Charging. Featuring of Input:9-16V; Output: QC 3.0 (both ports charging at same time). Recessed Mount InstallationSize: Dia 2-3/8'' x H 1-3/16''. Recommend cut size: Dia 1-3/8'' x H 1-1/4''. Recessed mounting design for fix place installation. You can add this USB charger to any place that you want! Wide Application Quick USB Charger charges your favorite mobile devices including the Mobile Phone (max speed), MP3 Players, Digital Cameras, and more. Max boost Intelligent Circuit DesignMaxboost intelligent circuit design protects against Short Circuiting, Over-heating, Over-currents, and Over-charging. Charging Stops when battery is full 1-Year Guarantee We have got the design patents and related quality certificates. We take full responsibility for our products and customer dissatisfaction. One year warranty Guarantee!