Viewing windows Type       LY500                         L
    Helmet Type       LYG-8523
     Filter Size       110mm×90mm×9mm   
    Active Viewing Area       92.5mm×42.5mm   
    Light Shade       DIN4   
    Dark Shade       DIN9～13   
    Way to shift Dark State       Inner Control, stepless shift   
    Switching Time       1/10000S   
    Sensitivity Adjustment       Stepless Control   
    Delay Time       0.1S～0.8S   
    Power Supply       lithium battery&solar powered   
    Rated Capacity of Lithium Barrtery       600mAh   
    Operating Temperature   -10℃～65℃   
    Sensors to Weld Arc       2   
    Mask Material       PA/PP   
    Protect Grade against UVB       DIN15   
    Grinding       NO       YES   
    Test       NO       YES   
    Low battery       NO       YES   
    Inside Protect shelter       104mm×47.5mm×1mm   
    Outside Protect Shelter       109mm×89mm×1mm