Received this Ninja™ Foodi™ NeverDull™ System Premium German Stainless Steel Chef Knife & Knife Sharpener, in exchange for my unbiased review of the product. The knife has a great feel, ergonomically. Has a great heft, but not too heavy. The sharpener is the main event, and worth the review. It has safety mechanisms that I appreciate. When you insert the knife to sharpen, it locks automatically. The stone sharpener keeps the knife blade, razor sharp. Just a few swipes of the blade in the sharpener, achieves optimal sharpness. Wish that I could use this sharpener with other knife brands. But there is a simple fix. I will just buy more knifes from the Ninja product line. Don't have to worry about dull knives again.