Ikelite's housing ergonomic mechanical controls provide access to all camera functions except for the flash-up switch and framing assist-seek button. Built for durability, the housing is made in the USA from corrosion-resistant polycarbonate, which is clear to allow you to monitor the O-ring seal and maintain a full view of the camera. The integrated flat glass lens port has a 3.9" diameter and accepts optional, external wide-angle and macro add-on lenses and color-correction filters. Expand your system by adding an optional AF35 AutoFlash strobe, which is triggered as a wireless slave by the firing of the camera's built-in flash and replicates TTL exposure. The housing is also equipped with two ports for Ikelite, Sea & Sea, or Olympus-type fiber-optic cables Canon's PowerShot SX710 HS Digital Camera offers a 20.3MP, 1/2.3" CMOS image sensor and DIGIC 6 Image Processor for sharp still photos, Full HD 1080/60/30/24p video, low-light sensitivity to ISO 3200, and continuous shooting at 6 fps. It's also equipped with a 30x optical zoom lens featuring a 35mm-equivalent focal length range of 25-750mm for wide-angle to extended telephoto coverage.