In collaboration with Phillips. I've been testing the machine for about a month and have recharged it once or twice. I have used it on my face and various places on my body several times a week. The battery, which is never a concern, and that it cuts hair so quickly and tightly to the skin, makes it my best experience with shaving so far. I do not think it is effective with the combs, as I find that it does not trim quickly and efficiently with them. Recommend to use only "clean blade" It should be said that the edges of the shaving head are a little sharp and feel uncomfortable in the armpit, for example, as it feels a bit like scratching the edges. Incredibly small and doesn't look ugly at all. For the price to be, it's a bargain, perfect for traveling. I definitely recommend and can imagine that many will be delighted to have this during the Christmas tree.