Feature:1. PROFESSIONAL DESIGN: The streak filter is specially designed for Action 3 4 camera, which brings more creative space for photography and records the beauty clearly.2. HD COATED: The filter adopts HD coating process for better clarity. Anti scratch coating design, can avoid the mirror surface being scratched, filled with oleophobic layer, water condensation beads, can prevent oil and stains.3. SPECIAL EFFECTS FILTER: This streak filter can make the point light source of the shooting screen to produce a brushed effect, creating a special effect like the brushed light source of a wide screen movie lens.4. EASY TO CARRY: The streak filter is lightweight and comes with a storage case that allows you to carry the filter in your pocket or backpack for easy transportation and storage.5. LIGHTWEIGHT FRAME: The filter frame is made of aerospace grade aluminum, sealed firmly, easy to clean up dust and stains, durable, all round protection of the lens, no fading and no rust.Specification:Item Type: Streak FilterMaterial: Aluminum, Optical GlassWeight: Approx. 29g / 1.02ozApplicable Models: For Action3 4 Sports Camera.Package List:1 xStreak Filter1 x Storage Box