I have built up over a very long period cornea beneath my feet (by wearing safety shoes, even on the big toes was which) and was always afraid to make something of it, as most I know, but take blades. Of course, the running was not just more pleasant. By chance I found out that there are also electric aids without blades. Unfortunately, most (eg the Pedigeräte) have very bad reviews (after a contact with the foot stand, do not grind reasonable, etc.). For this device I have not found any reviews and was naturally skeptical. Only on the Polish side were reviews. Although not speak Polish, but each time were reviewed and it was this star is always between 4 and 5 stars. So received risk, ordered device. And I was very pleasantly surprised. The device works properly (2 steps) and reasonably fast. It has the cornea removed completely and smoothly. Grinding It felt very comfortable and my feet have been around for years is no longer as pleasant felt like after the treatment, even I knew no longer at how beautiful can feel run itself. Battery drain, I can now but not estimate very well, since I have used absolute Cheap batteries and these were for the Mega treatment at the end, but as I said, that may well be due to low batteries. I recommend the device more definitely and am glad that I have this choice from the wide range of equipment offered.