1. Applicable model: Insta360 GO Ultra：Optical glass is used to increase light transmission without darkening the corners. Durable machined aluminum frame; protects the GO Ultra lens without discomfort.
2. Material: Aluminum alloy + optical glass+Silicone
3. CPL filter can reduce undesirable reflections from surfaces such as glass and water. It allows you to capture clearer and richer landscapes. Golden frame can be rotated and adjusted
4. ND filter: Reduces the amount of light entering the film without affecting color, for more ideal color representation. In a variety of environments, beautiful pictures can be taken without degrading image quality.