Citizen Men's BM6542-56P Eco-Drive Gold-Tone Watch Light powered Eco-Drive Japanese-quartz movement; Charges in natural sunlight or indoor light Durable, hardened mineral crystal Case diameter: 39 mm Gold-tone-stainless-steel case; Champagne dial; Date function Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving