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Shake Torch Faraday Star without batteriesProduct reference: SHAKETORCH |
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Forever Flashlight uses no batteries and requires only the single, included LED. Leave it unused in your car's glove box for years with complete peace of mind-you'll get that all important light when you need it. Forever Flashlight pays for itself quickly by saving you the cost of the batteries required to keep a standard flashlight in working order. How the Forever Flashlight Works: English physicist Michael Faraday discovered that any change in the magnetic environment of a coil will "induce" voltage in that coil. Forever Flashlight makes use of Faraday's Law of Induction to give you a lifetime of light without batteries replacement LED's or maintenance worries. The math used in Faraday's formula may be a bit challenging, but the Forever Flashlight makes it all simple-shake it and slide on the switch to get a dependable light every time! Instructions: Characteristics Light is visible from 1km away DimensionsSize: 3 x 15 x 3cm (1.2 x 5.9 x 1.2") |
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