Seiko Prospex 4R Compact Mechanical Diver’s Cobalt Blue 42mm Watch SRPL51K1

The Seiko Prospex SRPL51K1 is a refined evolution of Seiko’s celebrated Samurai diver heritage. Designed with angular aesthetics and Japanese precision, this compact diver blends bold style with everyday wearability. The 41.7 mm stainless steel case, measuring just 12.3 mm thick and ~49.5 mm lug-to-lug, offers a comfortable fit while delivering standout wrist presence. The gleaming cobalt-blue dial captures light beautifully, encircled by a unidirectional bezel and protected by scratch‑resistant Hardlex crystal with rich lume on the hands, dial, and bezel for excellent underwater visibility. The movement inside is Seiko’s durable 4R35 automatic caliber, featuring manual winding, hacking seconds, and a 41-hour power reserve. Equipped for serious adventure, this diver is ISO-compliant with 200 m water resistance, a screw-down crown & caseback, and a three-fold clasp with safety and extender for a secure fit.

UK Orders (Watches)

Orders under £250 will be subject to a delivery charge of £4.99 and will be sent on Royal Mail Tracked 24 for service.

Orders of £250 and over will be sent using Royal Mail Special Delivery, YJC will pay half of the cost leaving a charge of £7.99.

For orders above £500 will again be sent by Royal Mail Special Delivery covered entirely by YJC, free of charge.

The reason for the delivery structure is to ensure any and all watches sent are fully insured, if you have any special requests please feel free to get in touch with the team who will be happy to help accommodate.

International Orders (Watches)

European and International orders will be charged at £12.99 and sent by Royal Mail International Tracked service to ensure the watch is fully insured.

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