Welding Helmet ADF Controls Analog Battery Chemistry Lithium Ion Battery Life 2 500 hr Battery Type CR2450 Color Graphics Compatible Suspension Brand Name Westward EN379 Classification 1/1/1/2 Features 5 pt Adjustment Headgear with Removable Sweatband Low Battery Alarm Test Button Allows Test If The Auto Darkening Lens is Darkening Properly Graphics Black/Blue/White Grind Mode Yes Helmet Material Nylon Helmet Type Auto-Darkening Helmet Width 26 cm Includes Extra Front Cover Lens