Product Features 1. Adjustable to hold all types of smart phone. 2. Stylish Cup mount connect with gooseneck holder. 3. Fitting to varying size cup holders in your vehicle. 4. 360 degree rotation for desired position vehicle or horizontal mode. 5. Smart design grips your smartphone or tightly. Simple Installation 1. Put the nut into the ball on the gooseneck, align the concave and insert the ball into the fastener with force, tighten the nut. 2. Align the fastener with the back of the phone holder, then move it up to tight the phone holder. (When you hear the ?ti-tak?, means you are installing correctly). 3. Twist the knob on the base to fit your car cup holder (clockwise tightly, anticlockwise loose).