This filter could limit the reflection from non-metal surface such as water and glass windows.Lightweight convenient to install and useMake it clear under the waterIt helps to capture the real colors so photographers under the sea with this durable scratch-resistant filter can take a lot of amazing pictures and video.SpecificationMaterial: ResinPacking: plastic boxCompatible With: SJCAM SJ4000Package Includes:1x SJCAM Professional Underwater Diving Housing Transparent Lens Filter For SJCAM SJ4000