Auto darkening welding helmet with variable control and grinding mode. Colour: Red Viewing window area: 92 x 42 mm Auto-darkening filter dimension: 110 x 90 x 9 mm Ultraviolet ray protection level: Up to DIN 15 at all time Infrared ray protection level: Up to DIN 15 at all time Power On/Off: Fully automatic Mode: Weld/Grind Dark shade: DIN 9-13 Light shade: DIN 4 Switching time: 1/25,000 s Delay time: 0.2-0.5-0.8 s from dark to bright Sensitivity: Low-Middle-High Power supply: Solar cells + Lithium batteries User Manuel Included Lens Specifications: Professional tool for commercial or occasional use -Welding lens is the perfect replacement clear lens for most standard welding masks. -Anti splatter lens Plastic lenses so not only will spatter not stick to it but it is a little bit more robust if dropped unlike glass lenses. -Used to protect the darkening element -Replacement transparent protective lens cover for your auto darkening welding helmet SPECIFICATIONS Plastic lens 1mm thickness Clip attachment type 1 Spare Lens