Light state: DIN4 Dark state: DIN9 to 13 (stepless adjustment) Switching time: <1/10,000s at room temperature Delay time: slow/fast 0.15 to 0.80s Sensitivity: low/high Battery: Li-Mi and solar combination Minimum lifetime: 5,000 welding hours Viewing area: 90 x 40mm (3-5/9 x 1-3/5 inches) Cartridge size: 110 x 90 x 10mm (4-1/3 x 3-5/9 x 2/5 inches) Weight: 430g (0.95 pounds) Material of helmet: PP Available colors: blue, black and silver