The Citizen EO2020-08E Promaster Marine demonstrates that a dive watch can be both enjoyable and practical. Equipped with Eco-Drive technology, it runs on light and doesn't require battery changes. It includes a one-way rotating bezel, a screw-down crown, and a black polyurethane strap. Its sleek, black dial and bezel combine classic ruggedness with a subtle design, perfect for pushing your limits and adding excitement to your life. - Calibre E168 - Eco-Drive Technology - Promaster Marine - 37mm Case Size - Stainless Steel Case - Polyurethane Strap - 6 Months Power Reserve - Mineral Crystal Glass - One-Way Bezel - ISO Diver Certified - Screw Lock Crown - 200 Meters Water Resistant