Detail Universal X-Grip? Cell Phone Cradle with 1 Ball High-strength composite and rustproof marine-grade stainless steel construction Spring-loaded holder expands and contracts for perfect fit on your device Rubber-coated tips will hold device firm and stable Includes 1 ball mount adapter is not required Compatible with handheld devices that will fit holder dimensions: minimum width of 1.875, maximum width of 3.25 and a depth of 0.875 It is important to verify the dimensions of your handheld device with a case/sleeve/skin when determining the overall size Compatible devices: Apple iPhone? 5 with or without case/sleeve, Apple iPhone? 4S with or without case/sleeve, Apple iPhone? 4 with or without case/sleeve, Apple iPhone? 3GS with or without case/sleeve, Apple iPhone? 3G with or without case/sleeve, Apple iPhone? with or without case/sleeve, Apple iPod? touch (all models) with or without case/sleeve, Apple iPod? (G1-G5), and Samsung GALAXY S4 with or without case/sleeve