Attach your ihone 4/4S to your bike with waterproof security. Rugged plastic case with silicone liner protects from knocks, scratches, rain, mud and more, tested to IXP4 water protection standard. Touch sensitive membrane allows complete access to all applications, with weather-sealed ports for cameras, headphones and cables. Case rotates for easy vertical or horizontal viewing. Included mounting bracket suitable for bars up to 1.5" diameter. Optional heavy-duty quick release AMPS mount adapter (#3149) works with RAM gadget mounts. 5.6"x3.1"x.8". 3.2 oz.