Lightweight yet durable construction for long lasting use - Compact design with carrying handle for easier transit and storage - Varying voltage input design to meet your different needs - IGBT module technology for energy-saving and stable heat dissipation - The inverter welder switches AC power to DC then incorporate a stepdown transformer to produce the proper voltage and current - Its over-voltage protection, under voltage protection, over current protection, over load protection designs ensure you are safe when you use it - Ideal welder for whatever professional or personal use