The TRANSLIGHT 555 + Premium Auto Darkening Helmet from Jackson Safety features the company's 370 series Easy Grip Turn ratcheting mechanism and a 12.47 sq. in. viewing area. The viewing area offers switching speeds of 1/25,000 sec. to increase comfort and keep eyes less fatigued. It also has a True Color ADF 1/1/1/1 optical clarity rating and four arc sensors to provide ideal coverage when welding out of position. The helmet's proprietary external shade adjuster finely tunes in .2 increments or +/- 1 full shades for visual precision. Additionally, it has an external grind button to allow users to switch modes with ease.