Brand New Certified ANSI CSA CE Professional Multifunction Solar Powered Auto Darkening Welding Helmet+Grinding with 4 sensors This Helmet is ANSI,CSA and CE Certificated welding helmet Specification Full range UV/IR protection up to shade DIN 16 all time Solar powered auto-darkening filter helmet Auto switching time: light to dark is 1/20,000 Seconds Darkness shade control (DIN): shade levels9-13, Clear shade 4 in full conformity with CE and ANSI Z87 standards Charges with exposure to welding or sunlight Operation Temperature: -5 degrees C ~ 55 degrees C Full face coverage Viewing Area: 98mm x 55mm(3.86" x 2.17") high-impact resistant Nylon Function features: sensitivity knob for you to control easily "Welding"/"Grinding" can be selected by switchtime delay switch for you to control switching time from darkness to lightoutside darkness shade level knob This helmet can accept the cheater lens