Instruct: Classify the given Amazon review into its appropriate rating category
Query: I bought this Jan 5, 2018 and used it ...

I bought this Jan 5, 2018 and used it six times over a course of two and a half months. The first time we used it it worked excellently and was just as the description said and was touch operated, but after that we had to hold the buttons down to get it to work. We tried multiple times to set the working time but the display screen only showed zeros. The scroll wheel would not work when the working time was highlighted. All other options on the display screen work. It’s final malfunction was when it only works for three minutes than automatically shuts off.