Instruct: Classify the given Amazon review into its appropriate rating category
Query: Pretty good, but a bit unreliable

I used this approx. 3 days a week for a couple months. It gets nice and warm and lasts about 4 hours on the low setting. It did seem to randomly turn off sometimes when I was using it. The charging cable is short, so it dangled from my outlet while charging. Eventually the inner component for the charging cable got pulled out of place so it wouldn't charge any more. Admittedly that's my fault for not finding a different setup to charge it, but it doesn't explain the random shutting off while in use. I will try a different brand next time.