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.
Posted by John D'Errico on 4th Feb 2009
If this is a Lee shake-flashlight, it is the real deal. I've bought over a dozen for gifts to relatives and friends, and I have one in each room in my house. I've had them hold a charge for several months without having to re-shake them. With little shaking, the light lasts a long time. Occasionally, one may seem to malfunction--it only takes unscrewing the top and realigning the inside tube so that the long metal strip is directly under the on/off switch. I've owned different brands, and Lee is absolutely the best in my opinion.