Machine features: Easy operation, light weight and easy portability Pulse performance, especially for welding thin plates Low power consumption up to 75% compared to other similar devices Suitable for welding thin plates, hard and delicate work Constant welding current, very low welding sound, low welding spray Ability to continuously adjust the shock wave and suitable for automatic welding Advanced inverter technology, multifunction Ability to connect to a generator     Model WSM 250 Power Voltage (V) 220 Rated input current 20.7 No load voltage 60 Current range 10~250 Rated working volt 19 Efficiency (%) 85 Duty Cycle (%) 60 Power factor 0.93 Arc setup method HF Useable electrode 1.6~4 Instalation class F Protection class IP21S Weight (KG) 15