4 stars good
I feel like the button situation could be better.  It’s not difficult, just annoying toggling through.  Execution is easy.  Just grab a section of hair and lay it in.  Push and hold button till beeping begins.  Gently pull out hair when beeping is done.  We played around with settings till we found what worked for my daughters hair.  My biggest complaint is how long you have to hold the button down till it begins the count down.  It’s too long for short hair so her hair would spiral out of the device.  I had to brace her hair at the top before pushing the button and hold it there till the spinning stopped.  We just opened it and played with it for a bit.  We will have to experiment more.  Overall, I do like it.  I curled her hair in about ten minutes and much less chance for a burn.
Rating: 4 stars