GravityLight- An innovative device that generates light from gravity.
GravityLight doesn't need batteries or sunlight and costs nothing to run. It takes seconds to lift the weight that powers GravityLight, creating 20 minutes of light on its descent.
+ Instant light, any time
+ No running costs
+ No sun or batteries needed
+ Robust and reliable
To know more about GravityLight visit http://gravitylight.org/thedevice/