Features:The camera dome port is for Hero 9 sport samera. (please check the camera model before purchasing).Double Handles: The camera dome port is designed with double handles ,which provide you with stable photographic experiences when you are above,on or underwater surface.Wild Field of View: the DOME pushes away the water surface, so that the lens has enough field of view. Water will enlarge the objects in the water like a convex lens, and direct shooting will make the objects in the water become distorted and larger. Compared with the objects on the water surface, the photos taken in this way are very inconsistent.And the use of DOME PORT can be well coordinated so the photos and videos taken by this will giving you a real world.45M waterproof: This camera accessory is up to 45m/147ft waterproof . No worry about underwater activities .Intergrated design: The dome port has a shutter trigger and acrylic dome with 93% light transmittance that give you a great photography experience. Specifications:Material: Acrylic+ABSSize:24.5x18x10.5cm/ 9.6x7.1x4.1inchesWaterproof: 45m/147ftWeight:520g/ 18.3ouncesCompatible: Hero 9 Sport Camera Note:1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you order.2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you3.Camera Hero 9 not included. Package includes:1 X Diving Mask1 X Dome Cover 12 X Anti-fog Inserts1 X Manual Booklet