Capture stunning underwater shots with the Light and Motion Tetra UltraWide Underwater Lens 823-0491. This lens is compatible with Tetra housing and features a fixed/prime focal length for clear and precise vision. Its maximum aperture allows for ample light to reflect off the water and into the lens, creating beautiful images. The lens is easy to mount and comes with a weight of 1.6 lbs, making it simple to carry around. The exterior material is unknown, but the lens is designed to withstand the harshness of the ocean. This item does not come with a manufacturer warranty and is sold as a single unit. Get ready to capture breathtaking underwater photos with this high-quality lens.  Using this lens with the wetmate adapter (included) give you the ability to change lenses underwater.