Place of origin£º beijing, china (mainland)
Brand name£º vega
Model number: x501
View area : 90x35mm
Sensitivity : low/high
Shade control: din3 - 11
Cartridge size: 320x240x250(mm)
Switch time £º0.1s--0.8s
Power supply£º solar cell, 1pcs li-mno2 batteries lithium
Helmet material£º high impact resistant plastic/polyamide(nylon)
View field£º 90x35 mm(3-1/2''x1-3/8'')
Certificate£º ce&ansi
Warranty ; 2 years from the date of delivery.

1: Self-contained, one helmet is put into one color box and 6 color boxes into one large carton 2: in-bulk the fasten ring is separated with the shell and filters. Assembling is on u. 15 or 20 helmets are put into one carton.. Assembling video would be sent to you.