Feature: 1. High Light Transmittance: The filter is covered with optical film, waterproof film and high permeability coating; high hardness and light transmittance, will not affect the shooting effect. 2. Help Correct Color: Waterproof case dive filter can help correct color when using action cameras for diving photography, providing you great using experience. 3. Applicable Scenes: Dive filter is suitable for extreme outdoor activities, deep water diving, surfing, snorkeling and other water sports activities. 4. Good Workmanship: Dive filter is made of ABS and acrylic material. Exquisite workmanship, beautiful appearance design, small portable size. 5. Filter Function: This filter is specially designed for seawater diving photography, suitable for Hero 8 9, highly compatible, to meet different photography needs. Specification: Item Type: Waterproof Case Dive Filter for Hero 8 Material: ABS, Acrylic Weight: Approx. 11g / 0.4oz. Package List: 1 x Filter1 x Fixed Rope Note: The original waterproof case cannot be used, the auxiliary factory waterproof case is available.