Batteryless battery saving wind up flashlight never needs batteries and last forever. Power is generated through the winding action of the handle. Just a few seconds of winding will provide continuous lighting.
Posted by Michael on 15th Dec 2015
I like the fact that it doesn't need any batteries. And it will hold a charge for several days if you wind it up for at least 30 seconds. It has a charging port that the box says are will work with many cell phones. Unfortunately, mine isn't one of them. Otherwise, it's a decent product for emergency use.