I tested the epilator on my leg. The pain was somewhat bearable on my leg, but when I used the epilator on my thighs, it was kind of a funny feeling.
It works with rotating disc with speed level of 1 and 2. The epilator removes the hair from its root, but if you move the epilator really fast, the hair breaks up rather than getting uprooted, so it is better to refer to the user manual before using such a gadget.