HELVI SKY 4.0 self-darkening visor

Self-darkening visor SKY 4.0 TRUE COLOR - HELVIOptical class 1/1/1/2Filter size 110 x 90 x 10 mmViewing area 100 x 53 mm - 4 sensors - Light tint 4Dark tint 5 - 8 / 9 -. 13 variableGrinding TAKRegulation ExternalUV/IR protection up to DIN16Switching time from light to dark 1/25000 sSwitching time from dark to light 0,1-1.0 sSensitivity/delay adjustable by infinitely variable knobPower supply Solar cells and 1 CR2032 lithium batteryON./OFF . AutomaticLow battery alarm TAK, red lightControl Min Amp ≥ 5A AC - DC.