Welding Helmet, Auto-Darkening, Lens Shade 8 to 12, 3.0 Welding Helmet Light State, Viewing Area 3.74 in x 1.38 in, Welding Helmet Color Graphics, Welding Helmet Material Nylon, Classic Series, Grind Mode No, Electromagnetic Sensor No, Number of Arc Sensors 2, Switching Speed 1/10,000 sec, Graphics Metalworks, TIG AMP Rating 20A, Power Source Battery and Solar, Headgear Ratchet, ADF Controls Analog, Battery Type AAA Alkaline, Battery Life 2,000 hr