I like this welder as I know it uses 110/220 and is very light. But during testing I found that I can't hear the fan and it can't burn more than two electrodes without turning off a code. When I check the time, it's eight minutes before the code disappears. When testing, I see smoke coming out, so I understand it's burned out. But most importantly the welding is smooth but not tight as expected. Because it doesn't work in the test phase.