The Energizer LED Vision Headlight is lightweight and brilliantly bright with a fully adjustable and comfortable headband which also provides a secure and stable fit no matter what the activity - be it outdoor pursuits or indoor activites. The Energizer LED Vision Headlight benefits from up to 50 hours battery life in low mode and 7 hours in high mode. 2 bright and long life LED provides up to 80 lumens of vibrant and super white light that has a beam range up to 30 Metres - not the longest but far enough given its size and weight - with an easy to use on/off switch.