Item No.: G29B353
.Filter size : 110x90mm  
.Optical class:1/1/1/2  
.Viewing window : 92x42mm  
.Power ON/OFF : fully automatic   
.Power supply :solar cells  
.Switching time from light to dark:1/20000 second  
.Switching time from dark to light: 0.2/0.5/0.8s  
.Light shade number : DIN4  
.Dark shade option : DIN9-13  
.Shade Control: external,variable shade  
.Sensitivity Control: low/mid/ high  
.Grinding: Yes  
.UV/IR Protection:up to shade DIN16  
.Net weight  :440g  
.Operating temperature :-5℃~55 ℃   
.Storing temperature: -20℃~70 ℃   
.Helmet Material: PP(fireproofing)