swing light / Water bottle,Lantern,Flash

This is made to solve existing problems occurs when camping-uselessness of empty water bottle, disposable water bottle and inconvenience caused by necessity of carrying extra battery.
As solving these, we made it possible to use 3functions with only 1product-Flashlight, lantern and water bottle. You don’t have to carry extra battery-it can charge itself by converting kinetic energy, which is made when you shake the bottle, into electrical energy. You can use it as either lantern or flashlight with a simple motion, flipping the light source upside down. It helps to make easy camping lives of campers by simplifying complicated camping devices.