It's a cool idea, and I hope it is commercially successful, but not for me.
Those who are interested in knives would be able to get a more impressive knife for $399. And they are usually the type of people that enjoy sharpening a knife until it cuts better than this ultrasonic knife ever will.
This is a product which is targeted at people who don't really know a lot about knives and prep their meals with a dull blade.
I'm not hyping the product. I keep a knife set up to easily slice tomatoes, and if I don't want to clean it carefully afterwards I just use a good thin serrated bread knife. I'm still not really sure what this knife is "for". But I'm also not ruling out that it is "for" something interesting.
