The iOttie Auto Sense 2 Wireless Air Vent Mount is a Qi-certified car mount designed for maximum convenience and power on the road. Mount your smartphone in seconds thanks to the auto-sensing feature powered by a proximity sensor. Once mounted in the cradle: Qi wireless charging technology delivers up to 10W of power to the smartphone automatically without the need for additional charging cables. The Auto Sense 2 quickly and securely installs on both horizontal and vertical air vent blades where rubber prongs provide a vise-like grip and prevent the car vent phone mount from slipping.