The RAM® X-Grip® Large Phone Holder with Ball & RAM® Vibe-Safe™ Adapter (RAM-HOL-UN10B-462) is a combination of the classic RAM® X-Grip® device holder and the RAM® Vibe-Safe™ - the vibration damping accessory is designed to protect electronic devices from a wide range of vibration frequencies. The RAM® X-Grip® can rotate between portrait and landscape by loosening the center screw. It is compatible with B size RAM® components, making it easy to upgrade your current mounting solution. This product comes with an optional device tether that is recommended for outdoor applications. The holder is compatible with handheld devices that will fit the dimensions listed below, it is important to verify the dimensions of your handheld device with a case / sleeve / skin when determining the overall size. RAM® Vibe-Safe™ dampens a wide range of vibration frequencies.