Seiko Solar Watch. Seiko was among the pioneer in solar watch technology when it launched its first solar device in 1977. Seiko solar is a quartz watch designed to harness both artificial and natural light energy and store it in a self-recharging battery. This eliminates the periodic need for a battery change, thus offering a more convenient maintenance free watch.
In most Seiko Solar watches, it takes just one minute of sunlight to start full operation, two minutes for women’s model.