Optical rating：1/1/1/1 The biggest view area：100 x 67 mm Sensors：4 Light state：DIN 3 Dark state： DIN 5-9 / 9-13 UV/lR protection： up to DlN 16 Switch time (Light to dark)： <0.04ms Shade control：inside & stepless Sensitivity control：inside & stepless Delay control (Dark to light)：inside & stepless, 0.15-0.80s TlG amps rated：≥2 amps Grind mode：yes, inside Material of helmet: nylon Weight：560g±5% Operating temperature： -5℃ (23°F)- +55℃ (131°F) Storing temperature： -20℃ (-4°F)- +70℃ (158°F) Power supply: solar panel & replaceable lithium batteries 2pcs*CR2032 Packed by color box