Unfortunately, I was not only convinced of the sharpener:
Aside from the grandiose appearance - plain black, elegant, and thus not only suitable for sharpening, but also as an accessory, if you go somewhere swanky evening - convinced the handiness. All popular grips as the "nimble file" and "skillful grinders" are easily executed. Even the demanding "one-armed bandit" worked perfectly after initial trials.
Where I'm very picky, the issue is safety. And here have been lost and the two stars.
There is a lack of emergency stop, I can actually require at the price. If you imagine the horror scenario in which you lose control when sharpening. Here you can save as a switch life. And what is even worse: There is no warning triangle included. So inexperienced user of such a device are completely taken by surprise when they end up times when sharpening roadside and thus represent a traffic risk. Especially, if you at night times when sharpening of the road coming off, at worst, on a highway or country road, so a warning triangle is a must. So I had to add one more thing to buy around the corner in knife sharpener needs.
Finally considered this knife sharpener is a solid product, which is not convincing, unfortunately in terms of safety, but is available for an absolutely fair price.