I bought this trimmer. It has a long battery life. it is charge very fast compare to another trimmers and this is advantage point of this product. As a lifelong blade-shaving purist/traditionalist, I feel like I’ve finally seen the light.I can shaving many times in one blade by this trimmer. I don't feel any problems for shaving on my face by this trimmer. I realize this routine is bougie but each shave is fast, very comfortable, and totally smooth, and my face feels smooth and soft all day! When I use this, I feel comfortable. It is work fast and clean all hair on my face. A little goes a long way and it’s a truly excellent product to pair with the shaver and not expensive. I can shaving 5 times in one time charging.