Compact, lightweight respiratory protection and quality filter optics all-in-oneNatural colour auto darkening filterGrab and go with auto-on3M™ Speedglas™ Silver Front Panel 9100XXi houses external controls, enabling fast and easy access to the grinding and memory modes2.8" x 4.2" (7.1 cm x 10.6 cm viewing area )Delay function to set the dark-to-light opening timeArc detection sensitivity is adjustableAdjustable head suspension for increased comfort, helmet stability and weight distributionIncludes: Storage bag, Welding cap, Starter kitUser interface is easy to understand