Bestshoot 6'' inch 5M Diving Underwater Camera Lens Dome Port Lens Housing for Gopro Hero 3+/4 Camera Underwater Photography Package Includes: 1 dome port with waterproof case for Hero4 / 3+, 1 floaty Grip with strap and 1 cleaning cloth 6 inch, can be used no deeper than 5M The lens dome port made of glass, offers you better light efficient The Dome Port works with the Hero 3+ or Hero 4 housing case and does not require any special modifications or separate accessories,The camera is just as secure as always since the Dome Port slips right onto the housing, it does not alter the depth rating of the GoPro housing The side of the base has 10 screw,this design allows the dome to be fully disassembled for cleaning and service