1Temperature Resistance: Highquality PA/PP/sponge material, with excellent hightemperature flameretardant performance, antifall, high and low temperature resistance. 2Dustproof Design: The streamlined design has an exquisite appearance, effectively blocking smoke and dust, and cleverly avoiding the fog caused by the exhalation when the lens is cold. 3Auto Darkening: The LCD screen is equipped with two highsensitivity light detectors, which quickly darken when encountering an electric arc. Effectively cut off ultraviolet and infrared radiation. 4Flexible Adjustment: Equipped with fourway adjustment function for front and rear, size, flexible adjustment, highdensity sweatabsorbent sponge for forehead, more comfortable to wear. 5Adjuastable Sensitivity: The sensitivity and response time of the LCD screen can be adjusted by rotating the sensitivity and arc delay knobs on the left and right sides of the LCD screen according to actual needs. Item Type: Automatic darkening welding helmet Material: PA/PP/sponge Protection Function: Anti-glare, anti-impact, anti-splash, anti-ultraviolet, anti-infrared Bright State Color Number Grade: DIN4-5 Mouth State Color Number Grade: DIN9-13 Dark State Adjustment Method: External stepless adjustable Dimming Response Time: 1/15000s -1/30000s The Sensitivity Control Adjustment: Internal stepless adjustable Recovery Time (Adjustable Neilang Promise): 0.15-0.8s Power Supply: Lithium battery + solar Power Switch: Automatic charging Welding Arc Sensor: 2pcs Ultraviolet/infrared Protection Class: DIN16/UP TO SHADE DIN 16 Working Temperature: -15-65 Mask Structure: Head-mounted structure Service Life: 1-2 years Battery Type: Lithium battery 100mAh x 1 (built-in) 1 x Helmet 1 x Hood 1. It is forbidden to subject the tool to mechanical shock.2. If the battery leaks, do not directly contact the skin or eyes with the leaked liquid. If contact occurs, rinse the contacted area with plenty of water and seek medical attention in time.