Features: The waterproof depth can reach 30M, and the light transmittance can reach 95 percent . Unique hemispherical design with a 180 degree ultra wide angle view. Anti slip material buoyancy rod, comfortable grip, not easy to release, stainless steel screws, corrosion-resistant and not easy to rust. Small size, light weight, easy to carry, with anti loss rope. The anti fog plugin can prevent the camera casing from fogging, making underwater photography clearer and reusable. Specifications: Material: ABS Dome Size: Approx. 160mm or 6inch Handle: Approx. 160mm or 6inch Applicable Models: for Action 3 or 4 Sports Camera Waterproof: 30M or 98ft Note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution. Package includes: 1x Dome Port Underwater Housing with Handle