Feature 1 Aquarium Effect: Made with premium organic glass PC plastic, this waterproof port floats on the water surface and offers a perspective with half above and half below the water, recording vivid videos and photos. Push the water surface to 70mm to get clear view. 2 IP68 Waterproof: The integrated design of this dome port includes built in waterproof pads, providing dual protection to your camera and allowing for depth of up to 30m in underwater recording. 3 Selfie Mode: Equipped with a front hole and an arched handle, taking selfies is easier than ever. Provide you with a flexible way to take selfie underwater. 4 180 Degrees Wide Angle: Realistically reproduces the footage recorded by your action camera, without any dark corners or vignetting at the edges. 5 95% Light Transmittance: Made of premium organic glass with high light transmittance, ensuring optimal recording results with every use.Item Type: Dome portMaterial: Glass, PC, plasticWeight: Approx. 757g / 26.7ozWaterproof: IP68 30m / 98.4ftFitment: Fit for Osmo Action 4 3 Package List1 x Lens Cover1 x Clean Cloth1 x Floating Bar1 x Trigger1 x Manual6 x Anti Fog Sheet1 x Lanyard1 x Screw Rod