Welding Helmet ADF Controls Digital Battery Chemistry Lithium Ion Battery Life 3 000 hr Battery Type CR2032 Color Black EN379 Classification 1/1/1/2 Features 3 Yr. Warranty Grind Mode Yes Helmet Material Polyamide Helmet Type Auto-Darkening Includes (1) Spare Front Cover Lens (1) Storage Bag Includes Batteries Yes Lens Color Green Light State 4 Magnification No Magnifying Power 1.5x 1x 2.5x 2x Number of Arc Sensors 2 Power Source Battery Solar Series e650