1. Before use, make lenses are clean and dry.2. Upon removing the Lens Guards, apply new adhesives before placing back on your ONE X2.3. 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. Take care not to scratch the lenses as you remove the Lens Guards.Type: Lens CapWeight: 1.5g/ paircolour:Transparent + blackMaterial:Metal + plasticsize:33.5 x 7.6mmPackage Contents:4 pair x Lens Guards ProtectionOnly 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.