Instruct: Classify the given review as either positive or negative.
Query: A blade with a vibrator attached to it...

I've used good electric knives. This is no "bargain". I don't care how cute the box it came with is, this knife is USELESS. The motor wiggles the blade side to side just as much as it does back and forth. Consequently it is ABSOLUTELY IMPOSSIBLE TO GET A STRAIT CUT OUT OF THIS THING. Bought it. Made one slice. Returning it. Done.