Waterproof Qi wireless phone charging cradle features spring-loaded RAM Quick-Grip design and 10W maximum outputMade of powder-coated, marine-grade aluminum, stainless steel components, and high-strength composite for durability and reliability in the most demanding environmentsFor use with many wireless charging capable devices including Apple, Google, Samsung, Blackberry, Sony and othersFits devices 2.375”-3.25” wide, up to .875” depthRAM mounts backed by lifetime warranty; RAM electronics backed by 1-year warranty