E-TING Goggles Laser Eye Protection Safety Glasses 190nm-540nm Goggle Glass Shield with Case for Green Blue Laser Pointer

Condition: Brand New Protection Wavelength: from 190nm to 540nm Protection Features: All-round absorption Visible Light Transmittance: >55% Optical Density: > 5.0, (OD +5, OD +6) Attenuation: (10-6 < N% < 10-4) The length of temple is...