First use was on Thanksgiving dinner. It was a little slower coming up to temp than I had hoped, but adequate for it's class. It wasn't until morning that I knew it had shut off in the night, probably because a damp towel touched just the right point on the control panel. When I use it for a long cook again, I'll be more careful and hope that it was my mistake, not a glitch with the stick itself. It seems almost identical to my Instant Pot brand stick which I love. I thought about getting a bunch of these at this great price and using them in a kiddie pool for a low budget spa, but...no.