Practically microscopic in size, this nanolightology marvel shines brighter than most lights 10 times its size. Featuring a 100,000 hour LED bulb, it will radiate a bright 10 lumens for up to 8 hours, on one set of 4-LR41 batteries (included). Weatherproof and featuring a detachable clip, this tiny little torch really can be taken along anywhere…’cuz you never know when you might need a little light. 1.47"x.51". .36 oz. 1.47”x.51”. 10 lumens.