Effective, waterproof and no knicks! [SEP] Have tried several trimmers over the years and this one is great! Small, lightweight, Rechargeable, and WATERPROOF! I recently had ankle surgery and can't put weight on that foot just yet, that being said, I couldn't stand up to use this yet, but hubby was able to  easily help me use it as I was sitting in our shower. He was able to quickly and efficiently trim without any knicks! So far very impressed