This auto-darkening welidng helmets could be black, blue , yellow and silver color ,the dark states is from DIN9-13

The specification of auto-darkening welding helmet WH4500 is as follows:

LIGHT STATE: DIN4

DARK STATES: DIN9-13 ( Stepless Regulation)

SWITCHING TIME: (Light to Dark) < 1/1,000S at Room Temperature(Dark to Light) <0.1-1S (Automatic)

DELAY TIME: As Buyer's Option(WH4500A):

Slow: 0.6S-0.8S Fast: 0.1S-0.3S

Sensitivity adjustment: As buyer's option (W4500A):

LOW/HIGHBATTERIES: Li-Mi & Solar Combination(Min. Lifetime: 3000 Welding Hours)OPERATING TEMPERATURE: -5oC----- +55oC

VIEWING AREA: 90 X 40 MM (3-1/2" X 1-2/3")

SIZE OF FILTER CARTRIDGE: 110 X 90 X 10MM (4-1/3" X 3-1/2" X 1/3")

RATE OF ULTRA-VIOLET TRANSMITTANCE: 313 NM < 0.00006%365 NM < 0.000061%RATE OF INFRA-RED TRANSMITTANCE: 780-1300 NM < 0.003%1300-2000 NM <0.009%WEIGHT: 490G (1.08 Pound)MATERIAL OF HELMET: Nylon

The  available color of the helmet is black, silver, blue and yellow