This seems to be a generally well-made and well-packaged product, but it has a couple of weaknesses. Strictly speaking it's for 220V and comes with a European plug, but the output socket is of a universal type. The dial voltage calibration is fairly close up to 110V, after this the output tends to be a bit higher than set, perhaps because it's a 220V unit. The dial labelling also states 60Hz, which we can assume is just wrong. There is a moving-coil meter for output voltage, but this is not very readable and it's inferior to other units that featrure a digital display. The very good price perhaps reflects these weaknesses. I'm happy with the unit for general lab bench work.