'Welding Helmet, Auto-Darkening, Lens Shade 8 to 13, 3.0 Welding Helmet Light State, Viewing Area 3.81 In. x 2.62 In., Welding Helmet Color Silver, Welding Helmet Material Nylon, T94(TM) Series, Grind Mode Yes, Electromagnetic Sensor Yes, Number of Arc Sensors 4, Switching Speed 1/20,000 sec., Graphics None, TIG AMP Rating 3A, Power Source Battery, Headgear Ratchet, ADF Controls Digital, Battery Type CR2450 Lithium, Battery Life 1500 hr.'