It is a protection device designed for the Insta360 X4 action camera. The main body is made of metal, which can effectively protect the camera body. There is a a 1/4” threaded interface and a cold shoe mount on each side of the main body of the cage, which are used to expand fill lights, microphones and other products, and can support the use of the camera in horizontal shooting mode. The bottom of the cage has an universal action camera interface and a 1/4” threaded interface, which is used for external brackets and other products.The universal action camera interface has a magnetic suction function and can be fixed on the cage in normal storage without shaking.