Convenient installation - Tools-free?? just slide the blade into CD slot and turn tightening knob clockwise to stabilize the holder. Remember to remove mount before take CD out.</br>Safe Driving - Installing mount on CD slot will not keep out line of sight?? giving you more secure driving experience.</br>Expandable support - Suitable for all kinds of smartphones and devices (with case) from 2.2 to 3.9 inches wide.</br>Flexible Ajustable - The rotation ball joint supports 360 degree rotation. You can easily put your phone in horizontal?? vertical?? tilted and get the perfect viewing angle with one hand free.</br>Warranty Policy: Every item from Bestfy comes with 1-year warranty?? if any question about the product?? just feel free to get an exchange or all your money back.</br></br>Product