应急水能灯 / Emergency Water Lamp

This device is based on the use of electrolyte solution which can produce power. Thereby, when you add a right amount of water in a bottle, say, a discarded plastic bottle, and put this device in, they will work as a water lamp, which will be needed in power emergencies such as disasters, filed working and power cuts.
This device is easy to use, energy-conserving and environment-friendly since bottles are accessible in daily life and good to be recycled. Still, this device is portable and ornamental.