Large LED display can help you see the data more clearly, such as the current, function mode and welding mode. ACDC PULSED TIG WELDER: Software Controlled Square Wave AC/DC TIG inverter welder, it produces high performance with an array of pulse feature. 6 IN 1 TIG WELDER: In possesion of STICK, AC TIG, DC TIG, AC Pulse TIG, DC Pulse TIG, Spot Welding in one machine, meets your versatile welding needs. ALUMINUM APPLICABLE: Squarewave is the best option to improve your weld quality and make aluminum welding easier. Suitable for aluminum up to 4/25". HOT START: Easy arc start, stable current, minimum spatter, no sticking, good shaping, providing excellent welding experience.