Dark State: Din 9-13(Stepless Asjustment)
Switching Time: <1/10000 s, 1/10000 s(WH8001)at Room Temperature
Delay Time: Slow: 0.6~0.8 s Fast: 0.1~0.3s(or Stepless Adjustment)
Sensitivity Adjustment: Low/High or Stepless Adjustment
Power Supply: Replaceable Battery(Li-Mi for WH8001)&Solar Combination
(Min. Lifetime: 5000 Welding Hours)
Viewing Area: 98*44mm (3-6/7"*1-4/5")
Filter Cartridge Size: 110*90*8mm(4-1/3"*3-1/2*1/3")
Weight: 430 g(1 pound)
Material Of Helmet: Nylon
Color Available: Bule/Black/Silver
Other Features: Waterproof &Dustproof(WH8001)

We still have helmet of WH6000, WH5000, WH4500, WH4500A, WH4000, WH4000A, WH4001, WH3100, WH3000, WH1000, WH300, WH200, WH100S