Aspect ratio: 1/1/1/1. Largest viewing area: 100 x 67 mm Four sensors Dim state: DIN 3 Dark state: UV/lR protection up to DlN 16 according to DIN 5-9 / 9-13 Time of change (from light to dark): <0.04ms Shade control: stepless and internal Sensitivity control: stepless and internal Internal & stepless delay control (dark to light), 0.15-0.80s Rated TlG amps: ：≥2 amps Grind mode: indeed, within The helmet's material is nylon. Weight: 560g±5% Range of operation: -5°C (23°F) to +55°C (131°F) Temperature for storage: -20°C (-4°F) to +70°C (158°F) Power source: two replacement lithium-ion batteries (CR2032) and a solar panel enclosed in a colored box