1. Before use, make sure lenses are clean and dry. 2. Upon removing the Lens Guards, apply new adhesives before placing back on your ONE X4. 3. The Lens Guards are splash-proof, but are not designed for underwater use. Use the Dive Case for underwater instead. 4. To remove the Lens Guards use the provided Prying Tool. not to scratch the lenses as you remove the Lens Guards. 5. adhesive lens guard is specially designed to protect X4 lenses. With this lens shield, you can enjoy the fun of flying without worrying about scratching. Prevent lens from scratching, dust-proof, falling and abrasion. (The effect of fall prevention is reflected when taking photos, such as falling from high altitude or high altitude, and the effect of fall prevention is shocking) No need to disassemble and take photos to protect both. It is easy to install. Once pressed in place, it can be disassembled quickly. Take 1-2 groups of photos to show the effect that can be used with the silicone cover: the transparent protective cover can be matched with the silicone protective cover with different vision. Colour:Transparent Material:pc Package Contents: 1x Transparent Lens Cover 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.