Waterproof Qi compatible wireless phone charging cradle features spring-loaded RAM® Quick-Grip™ design and 15W maximum output. This cradle allows for single-handed placement and removal of your phone while taking advantage of Qi wireless phone charging. Both the top and bottom cups feature rubber to help hold your phone firmly in place. This Qi wireless charging cradle ensures your compatible phone charges as long as it’s within the listed compatible dimensions, a device tether is included that’s recommended for outdoor applications. With the RAM® Tough-Claw™ base, you can easily attach the wireless phone charger to round, square, and odd-shaped rails and bars ranging from .625” to 1.14” in outer diameter. The connected Type-A male pigtail connector features an in-line switch that allows you to turn off the wireless charging module when not in use. For in-vehicle charging, attach the pigtail to the included 1.2m Type-A male to Type-A female extension cable.