1. Gravity auto lock, stable anti-shake, no matter it is sudden braking, speed bumps, or rough roads 2. Mute and zero abnormal noise, bid farewell to noise troubles 3. One-hand pick and place, easy to operate 4. Invisible back clip, suitable for various horizontal/vertical air outlets 5. Material: aluminum alloy+ABS+PC+silicone 6. Applicable models: 4.7-7.2 inch mobile phones