Blending quality and style with superior technology, the Citizen Eco Drive black dial is the watch for all nature lovers and environment enthusiasts. A striking feature of this eco drive model is that it eliminates the need of replacing batteries. Relying entirely on artificial or natural light for its daily functioning, this watch proves to be a cost-effective investment in the long run. With power reserve capacity of up to 7 months, the watch converts light into energy that helps run the watch mechanism. The Citizen Eco Drive analog watch for men also comes with a special low-charge indicator so whenever you are running out of power and need to recharge, the watch gives you an advance notice.