Specifications: Model: NOVA Optical Class: 1 / 1 / 1 / 2 Viewing Area: 96MM X 39MM Cartridge Size: 110MM X 90MM X 9MM Arc Sensor: 2 (Independent) Shade State: DIN 4, 9 ~ 13 Stepless Variable (External) Grinding Function: YES (External) Sensitivity Control: Stepless Variable (Internal) Switching Time: <1/30000s (ANSI, +23°) Delay Time: 0.1-1.0s … Continue reading Top Gun Warrior Series Helmets