Powerful Clamp and Strong Magnetic Lock: the built-in dual-spring base clamp of the airplane phone mount has a 4,000 g clamping force, while the powerful magnet ring with 2,000 g of holding force keeps your phone securely in place, even in bumpy conditions. More Than Your Basic Plane Travel Essential: effortlessly install this versatile travel phone holder anywhere, from airplane seatbacks and luggage handles to gym equipment and kitchen cabinets, with a base clamp that fits up to 1.77 inches wide. Foldable and Portable: the collapsible design of this portable travel phone stand reduces to just 3.90 x 2.32 x 1.85 in and weighs only 4 oz, making it an easy daily carry and a travel must-have.