This is a modern, sleek men's watch from Seiko. The bracelet and case are a smooth stainless steel. The bezel is attached with a series of screws. The dial face has a contemporary design and features a weekday and calendar window. Only Seiko has mastered the challenge of generating electricity from the kinetic movement of the wearer's wrist. This electricity is stored in a self-recharging battery that needs much less frequent replacement than the conventional cell battery in a quartz watch, a major advance in green watchmaking. Men's Kinetic watch from Seiko Kinetic - powered by the movement of your body Time relay system preserves accurate time up to 4 years Three-fold clasp with push button release Hardlex glass with anti-reflective coating Weekday indicator at 3 o'clock position Stainless steel case and bracelet Calendar window at 3 o'clock position Case diameter: 43 mm 100m water resistance