Features: --Digital display. The digital display adjusts the current more timely and understands the condition of the welder. --Advanced ACR/ZX7/IGBT/MMA technology, guarantee a stable and large power welding work. --High frequency inverter, features quick arcing and less welding splash. --Energy saving，Inverter energy saving, first-class energy saving. --Current regulation. The current can be adjusted as needed. Specification: --Color:Orange --Rated input power: 4kw --Rated input voltage: AC220 / 380V --Frequency: 50 / 60Hz --Load duration: 60% --Number of capacitors: 3 820uf --Current regulation range: 20-250a --Welding material thickness: 2-5mm --Electrode diameter: 2.5 long welding --Product size: 200mmx88mmx120mm / 7.8inx3.5inx4.7in Package Included： Package 1: --1 x Welding Machine Note: --Do not use the welder for work other than welding. --Do not touch the live part. --Do not solder in places where skimming, cleaning and spraying are required. --When using, please bring a protective cover or protective clothing. --After a period of continuous use times the cooling period --Pay attention to the local voltage, the voltage of this product is 220V.