Accuracy: -20 to +40 seconds per day, Run time: 40 hours (at maximum winding), Functions: Mechanical wristwatch, Automatic winding + manual winding, Water resistance: 200m diving Glass: Dual spherical crystal glass, Case: Stainless steel, Band: Urethane Additional Specifications: Anti-magnetic Class 1, Luminescent (hands + indexes), Unidirectional rotating bezel, Screw-lock crown Details: From the MARINE series comes a mechanical diver's model with an appealing vintage look. The spherical glass and slim case structure give the watch a vintage-inspired design. Not only the case, but also the thick indexes on the dial follow the design of Citizen's archived "Challenge Timer" model. The urethane band model uses a softer material than before to improve the wearability. The new model has the robustness of a divers' watch, but with the functionality and design to fit in with town use.