I actually have a branded version of this, which cost me over £100, is very heavy, holds very little charge and does not even rotate like this one.
I wish i had found this fantastic little face brush before spending a fortune on a high end brand one because it's absolutely fantastic.
It spins rather than just vibrating and the bristles are extremely soft, you can use a light or firmer pressure with it and it comes with 2 additional attachments.
It's extremely simple to use, plug into a usb to charge and it charges very quickly too. I squeeze a little bit of foaming face wash onto it, then add some water and use on my face for 1-3 minutes and my skin feels very sof, smooth, exfoliated and refreshed afterwards.