Instruct: Classify the given Amazon review into its appropriate rating category
Query: Powerful little motor!

Great motor and i love that it’s USB rechargable: I was sick of replacing batteries in my old one. So far it is still going strong after charging 5 days ago. It’s very powerful on the lowest setting and works extremely well for frothing bullet proof coffee. The only thing that’s a little problematic is that the two heads (frother and whisk) are a little fiddly to install properly. But still a great buy.