Aristo Mig 4004i features: Pulse functionality reduces heat input and minimizes spatter. Up to 250 pre-programmed synergic lines. QSet intelligent welding system. Crater filling and adjustable burn back time. Pre and post gas flows. ESAB LogicPump prevents overheating of the torch. TrueArcVoltageTM system measures the correct arc voltage at the contact tip (together with ESAB torches).