Auto-Darkening Welding Helmet, ADF Controls Digital, Battery Chemistry Lithium Ion, Battery Life 2,000 hr, Battery Type CR2450, Color Blue, Compatible Suspension Brand Name Miller, Compatible Suspension Grainger Part Number 60UP42, Compatible Suspension Manufacturer Part Number 284218, EN379 Classification 1/1/1/2, Features Auto-On/Off, Half Shade Settings, Quick Release Cover Lens, Three Operating Modes, Variable Shade, Graphics Crusher, Grind Mode Yes, Hat Size Maximum Not Applicable