What Is In Box 6 Variable Current Adjustment 20-120Amp Welding Output Come with 20-120Amp welding output adjustable, simple knob design, 6 variable current adjustment,true current output make the welding work easier. Powerful Cooling System Powerful air intake and heat dissipation intelligent system, a good heat dissipation system can keep the welding machine working for a long life. Supports Multiple Rods Sizes This portable welder machine fit for 1/16″- 1/8" welding rods. Portable & Handheld Design Come with a carriyng case,easy to carry and operate. Specification Input Voltage 50/60Hz 110V±10% Input Current 42A Rated Output Voltage 24.8V Output Current 20-120A Rated Input Power 4.6KW Protection Class of Case IP21 Electrode Ф1.6-ф3.2 Power Factor 0.76 Insulation Class F Duty Cycle at 40℃ 20% Efficiency 85%