This is the ultimate, low-profile tactical flashlight. The lifetime LED projects a solid 50 lumen beam. The rubberized grip prevents slipping. The water resistant body is made from aircraft grade aluminum. What sets this light apart is it's aggressive self-defense face. The beveled tip is ground down to a perfect puncturing edge. Not so sharp that you'll cut yourself on it, but just enough to cause some damage when force is applied. The steel clip will keep it close by. It's duel function and compact size makes it perfect for everyday carry. And it stands up to act as a candle, so it's great to keep by the bedside. Runs on 1 AA battery, included. Length is 3.75in.