[Filter modal:WH400] Light state: DIN4 Dark state: DIN9-13 ( Stepless Adjustment ) Switching time: < 1/10,000s at room temperature Delay time: slow/ fast:0.15s~0.80s Sensitivity: Low/High Battery: Li-Mi & Solar Combination (Min. Lifetime: 5,000 Welding Hours) Viewing area: 90 x 40 mm (3-5/9¡± x 1-3/5¡±) Cartridge Size : 110 x 90 x 10 mm (4-1/3¡± x 3-5/9¡± x 2/5¡±) Weight: 430G (0.95 Pound) Material of helmet: PP Available color: blue/ black/ silver [Optional Filters:WH400/WH401/WH450/WH511/WH522 /WH523WH524/WH722/WH300]