Blue Whale™ Sign II lens coating
Blue Whale™ Sign II is a super anti-blue ray lens with a unique 18-layer coating. It not only protects from harmful blue light 400nm - 500nm (especially LED lighting) but also reduces glare to relieve visual fatigue. This will greatly enhance the lens transmittance and provide user with an unprecedented healthy visual experience.
|LENS COLOUR||BLUE PURPLE|
|BLUE LIGHT CUT||*22%|
*Rounded to nearest zero