Ikelite 6801.31 Underwater SLR-DC Housing for the Nikon D3100This heavy duty clear polycarbonate case is contoured to the camera, durable, and completely corrosion free. A clear view of the main o ring seal, port o ring seal and camera controls provides ease of use and confidence. The housing is fully functional to a depth rating of 200 feet (60m) and only slightly negative in salt water depending on choice of lens port (Lens port required sold separately.) Controls are provided through the housing for every