Magnetic quick change lens system (no need to unscrew a wet lens to "burp" the air bubbles) and lens holder. If you don't already have a Sony RX100 IV or V, even though they aren't the latest versions of the camera, they are worth looking into! Especially because they have the advantage of being less expensive. And, the newer cameras have longer telephoto range, which really has no advantage when filming/shooting underwater.
If you already have a camera for this... I'm excited for your upcoming dive footage! The magnetic lens mount is uncommon, and you don't have to use it, but in actuality it is a very handy addition. Your lens sticks to your housing with powerful magnets, but if you want to change from wide angle to normal, you can clip the wide angle lens to the mount, which you can screw onto a dive light arm (not included). Everything is in "like new" condition save for the rubber on the handles.
For some reason a thin layer of "skin" is peeling off the surface. This, of course, has no effect on the performance of the housing. I did change the battery for the moisture sensor within the past year, but I would recommend getting a new one just to be safe. I have never once had a moisture problem with this housing, not even fogged glass or condensation, even with warm water, sunshine and lots of camera use.
This item is in the category "Cameras & Photo\Camera, Drone & Photo Accessories\Underwater Cases & Housings". The seller is "dstuursm" and is located in this country: US.This item can be shipped to United States.