This emergency flashlight offers a built-in squeeze dynamo to power the flashlight. Just squeeze the dynamo like a hand-crank on the sides to charge up the power of the battery. The long lasting LEDs will last for up to 50,000 hours. The three LEDs are ultrawhite and are remarkably bright. It's great for camping, automotive, boating and emergencies. Includes nylon lanyard. You get three of these incredible flashlights in this pack!