Made of anodized aluminum for complete safety and strength, this housing will last for many years. With full control of the camera, you won't lose a single feature once in the housing. Threaded lens port (m52) to fit a wide variety of wet lenses from wide-angle to macro. Easy-to-use buttons with laser engraving to clearly see what you're pressing. The greatest feature of all? Built-in vacuum port and pump! Simply drop in your camera, latch the door, and press the button. The housing will pull its own vacuum and indicate with a green light that the housing is sealed and ready to go!