Size: Dive CaseDescriptionThis waterproof housing is for GoPro Max; it enables the camera to work under deeper water; the Diving meter is 40 meters; DetailsHousing is made of acrylic and it has high light transmission and pressure resistance features. The bottom of the housing is made of 316 stainless steel which is more resistant to corrosion than 304 stainless steel or iron; The lens is made of tempered glass and adopts AF, AR double-layer optical coating to make the lens more transparent and easier to clean. It can protect the lens from being scratched. Packing list dive case *1, quick-release buckle*1, monopod adapter*1, screw*1Notice: 1. Before diving, please ensure the housing is locked well. 2. The housing is with rubber seal to prevent water damage to your camera. You must keep the rubber clean. A single hair or grain of sand can cause a leak. 3. After dive, please clear with fresh water and dry naturally. Please do not use cloth; A cloth can cause lint to compromise the seal.