This wind-up lamp is reminiscent of a spring-loaded toy commonly found in the days of nostalgia. Not only does it look good, it is self powered which means you do not have to place it in range of any power source.

When you wind up the lamp with the key, a spring driven generator is being powered as it unwinds. The power generated is enough to keep the lamp running. This is a really good item to reduce your household power usage. Not only that, when the spring stops unwinding the lamp will power off so you can continue dozing without having to get up to switch it off.

hulgerisation via redferret