The Radikal helmet combines a clear and ergonomic undervisor with a flip-up front. This flip_up incorporates the automatic filter and the side visions, and is easily raised thanks to a side trigger and a semi-automatic assistance. The shade adjustment is variable from DIN shade 5 to DIN shade 13. Deactivatable, the Auto-shade Mode allows the automatic selection of a dark shade depending on the welding intensity. The Radikal has an XXL field of vision associated with the side vision in polycarbonate shade DIN 5. The automatic filter is classified 1/1/1/1 in optical quality and has True Colors technology for perfect vision of colors and contrasts. Combined with the Airkem ABEP filtration unit, the Radikal helmet provides filtration of Solid and Liquid Particles (PRSL) and filtration of A1B1E1 gases, with inward leakage classified as TH3. The Airkem ABEP has a digital display, 4 air flow rates, a filter clogging alarm and a low battery alarm. Operating on a Lithium-Ion battery, the Radikal Airkem ABEP provides 9-10 hours of running time. Bag included.