1.With helmets. 2.CE,ANSI Z87.1 certifications. 3.Viewing area: 91*41mm. 4.Electro-optical technology of Germany. Products meet the indicators1. Model of with helmets :EH-407, Configuration ADF Model: EF9040.2. Fire resistanc: yes.3. Material & Weight: PA/ PP, 0.52kgs.4. Viewing area: 91*41mm.5. ADF Frame Size:110*90mm. 6. UV/IR protection: up to shade DIN 16 at all time.7. Light state: shade DIN ...