These shake flashlights contain no batteries. Many new "fake shake" flashlights claim to be rechargeable when actually they use generic lithium batteries. These are the real deal. The waterproof case floats in water and the light is visible up to one mile. Shake, rattle and roll this battery and bulb-free Forever Flashlight for assistance whenever and wherever you need it. You'll save money by never having to purchase batteries or light bulbs. Electricity is generated as a magnet passes through the metal coil, displaying an innovative, super bright LED. Operate and recharge the Forever Flashlight with a simple shake - 30 seconds of shaking gives you approx. 5 minutes of powerful light. The light is even visible for up to a mile.Perfect for storms, the casing is waterproof and floatable. Use this convenient tool at home, in the car, boat, as a storm emergency or for spending time in the great outdoors. It measures approx. 11"L so it is easy to locate and handle.

Super bright blue/white LED bulb. Never needs batteries, never needs bulbs, maintenance free. 100% Waterproof case & even floats in water. Great for cars, boats, campers, homes, cottages and all emergency kits. 30 seconds of shaking powers LED for 5-7 minutes. The Forever Flashlight uses no batteries or bulbs. Instead it uses Faraday's Principle of Magnetic Induction and a bright LED to produce light without batteries. The flashlight is shaken for about 30 seconds to recharge a capacitor and it will then provide about 5-7 minutes of light. How does this happen? As the flashlight is shaken, a magnet passes through a metal coil which, when you shake, "induces" voltage in the coil generating electricity. During prolonged use it can be shaken for 10-15 seconds every 2 or 3 minutes for bright light. For outdoor fun or crazy-time emergencies, this flashlight is great by your side! An excellent, practical, and thoughtful gift, the light is self-powered with a few shakes of the wrist.