Too bad - the idea is certainly great, but the result, unfortunately, insufficient. Certainly - it caused slight curls / waves ... Anyway. But the effort is much higher than with a classic curling iron and also the thickness of the bar leads probably to the fact that the curls not as "tight" and "jumping" are, but rather wavy (especially with thicker hair) and, accordingly, quickly are posted.
From the appearance, handling and quality of this device appears to be quite well - in this sense no "cheap goods", but if the results are no curls, the goal is just wrong. Now - for some it seems to work .... that is also often in styling products vary widely. Unfortunately, I no enthusiasm!