3-Hand Japanese Quartz Water Resistant up to 10 ATM / 100 Meters / 300 Feet 40mm Stainless Steel with Enamel Filled Crown Domed Hardened Mineral Crystal 20 to 18mm Tapered Leather Band with Stainless Steel Buckle and Quick Release Spring Bar Adding improvements to their best model, Nixon's Sentry Solar SS watch will never die. Now equipped with a solar cell, one hour of office light exposure powers it for an entire day, while six hours of direct sunlight keeps it alive for six straight months! Offering visibility in the dark, this watch is built with Lum-tip skeleton hands, making it more functional and just as fashionable.