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43.8mm stainless steel case with unidirectional rotating bezel and Hardlex crystal
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Seiko Caliber 4R35 automatic movement with manual winding and 41-hour power reserve
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LumiBrite hands and indexes with screw-down crown and 200m diver’s water resistance
The Seiko Prospex Sea SRPF03 is a professional-grade automatic diver built for reliability in demanding underwater conditions. Its 43.8mm stainless steel case delivers a bold and robust presence, paired with a unidirectional rotating bezel for precise dive-time tracking. The dial is equipped with LumiBrite-coated hands and indexes to ensure excellent visibility in low-light and deep-water environments. Powered by the Seiko Caliber 4R35 automatic movement, the watch offers manual winding capability, a stop-second function, and a dependable 41-hour power reserve supported by 23 jewels. A Hardlex crystal protects the dial, while the screw-down crown and screw case back enhance water resistance. Finished with a stainless steel bracelet and a three-fold clasp featuring secure lock and push-button release with extender, this model is engineered for serious diving performance.
3-Year Seiko International Warranty | Delivered in Original Packaging | Fast & Secure Shipping