Feature:1. Professional Design: Specifically designed for ACTION 3 4 cameras, this filter provides more creative possibilities and allows for clear recording of scenic beauty, offering a professional touch to your photography.2. Vibration Damping Polarizer: By using a vibration damping polarizer, this filter simultaneously meets the needs of reducing exposure and eliminating non metallic reflections. It combines the advantages of two filters, making it a powerful tool for landscape photography.3. High Definition Coating: The filter is coated with a high definition coating, ensuring better clarity and preventing scratches. It also has an oil repellent layer that repels water droplets and prevents oil stains, providing added protection against smudges.4. Convenient Portability: With its ultra thin metal construction, this filter is lightweight and easy to carry. It comes with a storage case that allows you to conveniently store and transport the filter in your pocket or backpack.5. Practical Design: Enhance your photographic skills and capture stunning images with this practical NDPL filter. The intensity of light suppressed by NDPL filters is ranked according to the size of the number, the larger the number, the greater the light resistance and the more light suppressed.Specification:Item Type: Action Camera NDPL FilterMaterial: Aluminum Alloy Optical GlassCompatible Model: for Action 3 4Weight: 29g or 1oz.Package List:1 x Lens Filter 1 x Storage Box