Two buttons on both sides for manual opening and closing of the armsOne-handed operation, easy to place the device and take it out after chargingQuiet and durable stepper motorAluminum arms with soft spongesThe strong gel absorbent panel can be attached to the dashboard as well as to the windshieldIntelligent sensors for automatic closing of clampsGravity trigger to close clampsFits 4.7-6.7 inch smartphonesQi Standard - Input: 5V 2A, 9V 2.22A - Output: 5W (5V 1A), 7.5W (7.5V 1A), 10W (9V 1.1A), 15W (9V 1.66A)Induction Coil Range: 83%Frequency: 110.5 - 205kHz