So far I'm real happy with this thing. Got it two days ago, been cleaning right and left with it. This thing has got LOTS of power, enough to clean brass for reloading. The manual is a total joke, written by somebody whose seventh language was English, but the interface is completely intuitive. You really don't need the manual.Turn the switch on in back. The display lights up with the default values. Set your temperature, push the start-heater button. Wait hours for the temp to come up.(The slow heating is actually a good thing as it allows more precise temperature control.) Suspend object to be cleaned in tank.In my case, beakers containing stacked brass in cleaning solution. Set sonication time. Push start-sonication button.And then cover with towels and a blanket because this thing is REALLY LOUD. Annoying in the extreme. I wound up putting it in a closet heavily muffled, and that worked.