Rechargeable Flashlight, Recharging, LED Bulb

This amazing flashlight is designed to take advantage of Faraday's Principle of Electro-Magnetic Induction: If a conductor is moved through a magnetic field, a current is induced in the conductor. It requires no batteries to operate - simply shake it for 20 seconds so the conductor (metal cylinder) passes through the magnetic field (copper coils) enough to build up a significant charge and you'll have a strong beam of light that lasts for 30 minutes. The beam can illuminate a 6 ft radius at a distance of 30 ft and the light is even visible for a mile. The flashlight works in extreme heat or cold, is waterproof and has a shock-resistant high-tech housing that lasts for years.