1、PROFESSIONAL DESIGN: This filter kit is specially designed for GO 3S action camera, which can bring more creative space for photography and help users record the beauty clearly. 2、HD COATING: The filters are coated with HD coating for better clarity. And they are designed with anti scratch coating to avoid scratches. At the same time, they are filled with oleophobic layer, which will form water droplets when water falls on them, and at the same time, they are anti oil and anti grime. 3、ND FILTER: ND filter can be used in strong light environment, which can prevent overexposure, resist scattered light, increase color saturation, and make the picture more translucent and colorful. It can realize foggy flowing water, night light tracks and other effects, the larger the number the stronger the effect. 4、CONVENIENT TO CARRY: The filter has a low weight and comes with a storage box, which makes it easy to put the filter in your pocket or backpack, making it easy to carry, transport and store. 5、FIRM MOUNTING: No need to remove the lens, just snap it directly onto the camera lens, very simple. With knob type mounting, the connection is very tight and not easy to fall off. Item Type: Camera Lens Filters Kit Material: Aluminum Alloy, Optical Glass Applicable Model: For GO3S Action Camera Mounting: Knob Type 4 x Filter 1 x Cleaning Cloth 1 x Storage Box