Auto Darkening Welding Helmet Multi purpose helmet which can be used for all welding and grinding applications Improve your welding skills and accuracy by effectively giving you an extra hand, compared with a traditional head shield. It's large view area allows you to see clearly what your welding and the auto darkening response time is 0.03ms. Suitable for the protection of retina burns (which can lead to a loss in vision) as well as arc eye (where the cornea becomes inflamed) Suitable for all Ming / Tig and Arc welding. Fully adjustable Head band so suitable for all. Comes complete with 2 extra spare lenses (front panel). Specifications Viewing area 96mm x 39mm Light state shade 4 variable Shade 9 13 suitable for all functions of welding. Grinding Function DIN4 Switching Time / Reaction time 1/30000 second Filter dimension 1100mm x 90mm x 8.5mm UV / IR protection up to shade DIN15 (at all times) Tig rating Enhanced Power supply Solar Cell and Li batteries Sensitivity internal variable