1.Full face helmet by CE,ANSI Z87.1 certifications. 2. ... Electro-optical technology of Germany. 3.The response time of 1/25000s. 1. Model Of full face helmet ... lithium batteries be changed.10. Switching time Of full face helmet:a) Light to dark: 1/25,000s. ... EF9040J, EF9040,EF9242,EF9646,EF9848.14. Colour Of full face helmet: blue,green,silver,black,yellow,red, And ...