High quality materials: Foowoo solar powered welding helmet is made of high-strength PP material, which has anti-resistance and anti-aging function to protect face and eyes from risks (Strong Arc Rays and Hot Metal Projections) when welding, Meet your need for daily welding works like electro-weldings, gas shielded welding, Argon-Arc welding, TIG ,MIG MAG ,MMA, Plasma Clean comfortable view: Super large viewing size 3.9’’ x 2.4’’ clear visor viewing area; Diffusion of light, variation of luminous transmittance and angular dependence allowing the welder to see clearly at different angles;Light weight suitable for long time working; Balanced with an adjustable and fatigue-free comfortable headgear that wears comfortable and relieves fatigue Foowoo Filter performance1:Our true color filters are designed to effectively protect your eyes with the top optical Class 1/1/1/2, UV/IR /Protection DIN 16 Foowoo Filter performance2:Auto-darkening True color filter switches from light to dark in 1/30000 sec, in event of electric failure, the welder remains protecting against UV and IR radiation according to shade 16.1/2/1/2 rating meets ANSIZ87.1-2010 and EN3794/9-13 standards. A smart choice for safety Foowoo welding helmet with solar panel technology and a replaceable 2*CR2032 lithium battery that can work for longer life (up to 5000 hrs) to adapt to different working conditions