Demonstrating that a dive watch can embody both enjoyment and functionality, the Citizen Promaster Chrono Diver adheres to ISO standards. Utilizing Eco-Drive technology, it harnesses the power of light, eliminating the need for batteries and ensuring uninterrupted dives without the necessity to open the case back. This timepiece showcases a stainless-steel case and bracelet, complemented by a blue bezel and a coordinating blue dial. It features a one-way rotating elapsed time bezel, a 1/5th-second chronograph, 12/24-hour time display, date function, and a water resistance rating of 200 meters. Its caliber number is B612. - Calibre B612 - Chronograph - Promaster Marine - Eco-Drive - Stainless Steel Case and Bracelet, with push button buckle - 44.5mm Case Size - Mineral Crystal - 200 Meters Water Resistant