The Edon welding machine (MMA300s) is a popular model in Edon's line of portable inverter welders, designed primarily for MMA (Manual Metal Arc) or "stick" welding.
Similar to other models with high numbers, the "300S" in the name is a series or marketing number. The machine is a compact, single-phase welder intended for light industrial, workshop, and heavy-duty home/DIY use.