Arms and Foot Auto Clamping TogetherThe wireless car charger's arms and foot will auto-opening after connecting to power, and will auto clamping firmly once place your phone inside, don't need to manually adjust the foot to clamping the phone. Automatic Precise AlignmentThis car wireless charger is a built-in advanced sensor, just place your phone in after power on, it will intelligent identify and auto-adjusting the phone to the best charging area according to your phone model, no need to manually adjust the foot. Adjustable Cup HolderThis extendable base has wide compatibility, it can perfectly fit the cup hole with a diameter between 2.6-4.0 inches. Adjustable Viewing Angle and HeightThe cup holder phone mount Charger with a sturdy telescopic long arm that extends up to 11.2in. The telescopic long arm can rotate 270° and the ball head can rotate 360°, which can help you get the most comfortable and safest viewing without neck or eye strains while chargin