When I bought my wife her ring, I bough a high quaility ultrasonic cleaner from Sharper Image. 27 years later, it died and I bought this one as a replacement after a lot of research.From the first run, I now realize how much better these devices have become. The sonic waves were so much stronger. The effectiveness of the cleaning and time it took was reduced considerably. I use it with iSonic cleaning concentrate and then pour a little distilled water on the items as a rinse.My old cleaner was over $100, 27 years ago. This one is a lot cheaper and has excellent performance. I'm glad researching ultrasonic cleaners led me to this one.