Frame Size: 110x90x9mm View Size: 98x43mm UV/IR Protection:DIN16 Arc Sensor: 2 Light State: DIN4 Dark State: DIN9-13 Sensitivity Control: stepless adjustable. Delay Time Control: stepless adjustable Shade Control: External Switching time from light to dark: 1/25000s Switching time from dark to light: 0.2-0.4s Grinding Function: According to your requests Power Supply: Solar cell and Lithium battery Power on/off: fully automatic Operating Temperature: -10â??~65â?? Helmet Material: PP/PA/Nylon Approved: Certificate: CE EN379, ANSI CSA AS/NZS Warranty: 2 years