Welding Helmet, Auto-Darkening, Lens Shade 9 to 13, 4.0 Welding Helmet Light State, Viewing Area 3.54 in x 1.57 in, Welding Helmet Color Black, Welding Helmet Material Nylon, WHB 1000 Series, Grind Mode Yes, Electromagnetic Sensor No, Number of Arc Sensors 2, Switching Speed 1/20,000 sec, Graphics None, TIG AMP Rating 8A, Power Source Battery and Solar, Headgear Ratchet, ADF Controls Knobs, Battery Type Lithium, Battery Life 3,000 hr