The complete guide
Reading past the marketing: what warranty length actually tells you
A 10-year warranty on a small countertop appliance is unusual enough to be worth a second look — most ultrasonic cleaners in this price range carry 12 to 24 months. It doesn't guarantee the device will last a decade, but it does signal that the manufacturer is willing to stand behind the electronics for longer than the category norm, which is a reasonable proxy for confidence in the build when you can't inspect the internals yourself. Pair that with the IPX6 rating and the four listed safety certifications (CE, FCC, RoHS) before treating any single spec as the deciding factor.