I am here regarding one query. I want to check whether my watch is solar powered or not. I have recently bought a G shock g2300b â 1v watch. How can I check whether my watch is solar power watch or not? One of my friends told me to put my watch in sunlight for long time or in the dark room for long time to check whether my watch is solar powered or not? Can I use these methods? Or there is something else that I should try? I would really appreciate your views regarding this. Thanks.