hat
-Lans blòk 99% oswa 100% nan reyon UVB & UVA. Youn nan pi gwo diferans ki genyen ant UV 400 atik ki pwoteje kòm konpare ak lòt atik ki pwoteje kont radyasyon solèy la se lefèt ke UV 400 atik pwoteje yo kapab bloke reyon limyè tankou ti kòm 400 nanomètr.
eng
-Lenses block 99% or 100% of UVB & UVA Rays. One of the biggest differences between UV 400 protected items as compared to other items that protect against the sun's radiation is the fact that UV 400 protected items are capable of blocking light rays as small as 400 nanometers.