[Extraordinary Hardness]With optical tempered glass material, about ten times harder than plastic protective lens cover, plastic hardness is generally 1H, tempered glass can reach 9H or 9H. Fearless scratching, more than plastic protective mirror, better translucency. [High Transmittance]Optical tempered glass material transmittance close to 92%, coated with AR coating layer, so that the lens transmittance increased to more than 98%. The frosted black edge around the design can absorb reflective stray light, making the light and shadow more pure. [Waterproof & Anti-scratch]the lens cover has a waterproof coating layer, drip angle up to 115 degrees, the lens does not leave water droplets affect the effect. Anti-scratch, waterproof, dustproof, anti-deformation, high temperature, can effectively protect your camera lens. [Compatible with All X3 Metal Frames]Glass protective lens cap with paste type design, accurate fit for 360 X3 camera, easy to install and remove, can be used with all X3 metal frame on the market at the same time, does not affect the charge. [Please Note]1. the lens guard are convex, if the video appears black lines, please download the official APP, use the pigment elimination function to deal with this problem; 2. The lens shield of X3 is splash-proof but not designed for underwater use, please use a diving cover for underwater photography. Color: Black Material: plastic Package Contents: 2 x protective glasses 4 x spare glue 1 x triangle warper 1 x English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.