Model: GL - 1001M      
Viewing field: 90 x 40mm (3.54 x 1.58in)    
Shade control: Light states: DIN4      
Dark states: DIN9 - 13 Outside stepless adjustment  
Switching time: Light - dark: 1/25000sec (0.04ms)  
Delay time: Dark - light: 0.2 - 0.3sec    
UV/IR protection: Up to shade DIN16 at all time    
Operating temperature: -10º C to +70º C (14º F to 158º F)      
Power supply: Solar cells batteries, Two AAA batteries  
Lens power control: With On switch, Auto-off 15 minutes (when not on welding)    
Battery Indicator: Normal LED & LOW BATT LED
Helmet Material: PP (Fireproofing)      
Total weight: 515g