The Citizen Eco-Drive watch has a solar panel which it uses to run itself. This eco-friendly watch can use either sunlight or any incandescent light to charge itself which means that you will never have to change the batteries. The watch converts light into electrical energy which it then stores, so that it can last a very long time without any light. The Citizen Eco-Drive only needs three minutes in the sunlight to be able to power itself for an entire day, and around two hours of light in an office environment. Once the watch is fully charged, it will be able to run for 45 days without seeing any light source at all. (more…)