Combining rugged performance with classic field watch aesthetics, the Seiko 5 Sports SRPJ81K is a reliable companion for everyday adventures. It features a durable 36.4mm stainless steel case paired with a sleek silver bracelet, framing a bold black dial with luminous hands and markers for easy readability in all conditions. Equipped with a day-date display at 3 o’clock and protected by curved Hardlex glass, this watch is built for real-world use. Inside, the in-house Calibre 4R36 automatic movement powers the watch with a 41-hour power reserve and includes hand-winding and hacking capabilities for added precision. An exhibition case back reveals the intricate mechanics in motion. With 100 meters of water resistance and a secure folding clasp, the SRPJ81K effortlessly balances sporty durability and timeless style—making it an excellent choice for those who appreciate performance-driven design. - Automatic Movement – Powered by the movement of the wearer - 41 Hours Power Reserve - Calibre 4R36 - 36.4mm Case Diameter - Hand Winding Capability - Exhibition Case Back - Curbed Hardlex Glass - Pull Out Crown - Day and Date Display - Stainless Steel Case and Bracelet - 100 Meters Water Resistant