This arc welding machine/MMA welding machine/welder uses advanced inverter technology (IGBT Inverters) which allows for an ultra powerful welder that is lightweight (4.6kg). Handle on top allows you to carry the unit for those off site jobs requiring portability. The beauty of this welder is that it does not sacrifice power output for its reduced weight. The circuitry of the inverter welding machine reduces energy costs up to 50% compared to traditional welders while being highly effective. The welders robustness makes it usable for your average weekend hobbier all the way up to your Industrial welder. The Inverter technology produces a very stable and reliable welding current.