... of Germany. 3.The response time of 1/25000s. 1. Model Of full face helmet: EH-226/EF9242.2 ... cells, two lithium batteries be changed.10. Switching time Of full face helmet:a) Light to dark: 1/25, ... 1s.11. Sensitivity:low or high (TIG).12. Power on/off : Automatic.13. EH-2 Helmets Series Adapt ... EF9040J, EF9040,EF9242,EF9646,EF9848.14. Colour Of full face helmet: blue,green,silver,black,yellow,red, And ...