Graceful openwork stirrup shaped links define this graceful jewelry style watch Eco-Drive Technology allows the watch to charge outdoors or in artificial light so you never have to change a battery! When fully charged it will run for 1 Year without additional exposure to light. (1 Year Power Reserve) Stainless Steel Case and Bracelet Bracelet Features a Jewelry Style Clasp Water Resistant to 30 meters (100ft) Mineral Glass Crystal