I love this little device. It is so much more civilized than tweezers, and so much more comfortable. Just rub the pencil eraser sized tip over your brow, and stray hairs disappear. It works great on pesky chin hairs, too. There is no pain, just a little buzz from the motor. I do not think I can throw my tweezers away, though. I am not coordinated enough to do fine shaping with an electric device. I would be afraid of slipping and removing some essential part of my eyebrow. So, for fine shaping, it is still tweezers, but for the larger areas, this is the tool for me. It requires one AAA battery--mysteriously not included despite there being a space for one. One does receive a small brush for easily cleaning the device after each use. A great little tool.