This welding helmet is equipt with True Color technology, which not only preserves the existing 1-1-1-1 optical clarity rating, improves visibility, but also reduces eye strain by minimizing the traditional lime green coloring in the helmet view screen. The whole hood is designed to be lightweight, and the headgear is fixed with an oversized comfort cushion with extensive adjustability and settings, which helps to improve better comfort. This welding helmet conforms to the latest safety and technical standard of ANSI Z87.1 / EN379 CE / CSA Z94.3. Enjoy your welding job with this helmet. Great for TIG, MIG, MMA Viewing Size 3.64 in. * 1.67 in. with 2 Premium Sensors Better clarity, True color view - 1/1/1/1 Optical Clarity Increased battery life Superior comfort with the pivot style headgear Light states: DIN 4 Dark states: DIN 9~13 Stepless Control Response time (bright to dark): Sensitivity (welding based on current size) adjustable: low/high Power on/off: Fully automatic Power supply: Solar cell, non-replaceable battery UV/IR protection: DIN 13 Working temperature: -5~55 deg. Storage temperature: -20~70 deg. centigrade Low voltage indicator ADF self-check