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This pre-owned Omega Seamaster Diver 300M ref. 217.30.42.21.01.001 (2026) is a high-performance dive watch that blends technical precision with a refined modern aesthetic. It features a 42mm polished-brushed stainless steel case paired with a black ceramic bezel, highlighted by a white enamel diving scale and a polished grade 5 titanium inner ring for enhanced durability and contrast. The matte black dial is fitted with rhodium-plated hands and indexes filled with white Super-LumiNova, along with four rhodium-plated Arabic numerals for excellent legibility in all conditions. Powered by the Omega Co-Axial Master Chronometer Calibre 8912, it delivers METAS-certified accuracy, anti-magnetic performance, and robust reliability. Finished on a stainless steel bracelet with an extendable foldover clasp and diver extension, and secured by a titanium screw-in caseback engraved with the iconic seahorse, this Seamaster is a true professional-grade diver built for both function and style.
Pre-owned OMEGA Seamaster Diver 300M ref 217.30.42.21.01.001 (2026) is the latest edition of the brand-new 4th generation Planet Ocean. The collection initially debuted back in 2005 as a more capable version of the Seamaster Diver 300M. The second generation debuted in 2011, followed by the 3rd generation in 2016. Now, as of 2025, ref. 217.30.42.21.01.001 carries forward the newest collection, complete with a cleaner aesthetic (no date or helium escape valve), a new bracelet, and a clean, black-and-silver design set. The 42mm stainless steel case is paired with a black ceramic bezel and white enamel diving scale, giving it a sharp, high-contrast look, while the matte black dial prioritizes legibility with bold, luminescent hour markers and hands. Rhodium-plated hands and markers filled with Super-LumiNova stand out clearly in low light, and the addition of Arabic numerals at the cardinal positions gives it a very dynamic design. The bracelet includes a diver extension, making it practical for everyday wear and beyond. It’s a more contemporary take on the Seamaster, with a focus on clarity, durability, and function. Shop OMEGA Seamaster Collection
This pre-owned Omega comes with the remaining Omega five-year warranty from March 2026, in addition to Bob's Watches one-year warranty
This order is ready for shipment within one (1) business day after the order has been approved and processed. All watch orders are shipped FedEx overnight and are fully insured at no charge to the customer. Please be advised that for any deliveries from Bob's Watches, a recipient aged 21 years or older must be present to provide a signature upon receipt of the package. For more information on shipping, please visit our shipping page . For further details on returns, please check out our return policy page .
Do you have questions about our Used Stainless Steel Omega Seamaster Black Dial Planet Ocean 600M? Our team of friendly watch experts is here to assist you. Whether you're curious about its features, authenticity, or purchasing process, we're just a call or email away. Don't hesitate to reach out; your perfect Blue Rolex Submariner watch is just a conversation away.

Rolex watches are synonymous with luxury, style, and precision. These iconic timepieces are crafted using only the highest quality materials, including precious metals and gemstones. Rolex watches are designed to withstand the test of time, with intricate movements and advanced technology ensuring unparalleled accuracy and reliability. As a status symbol of success and sophistication, Rolex watches continue to be highly sought after by collectors and enthusiasts worldwide. Learn more by reading our Rolex watches ultimate guide and discover the finest collection of Rolex for sale, embodying luxury and precision.

We are proud to present a collection of authentic, unworn or pre-owned luxury watches that have been rigorously verified for authenticity. Each timepiece is subject to an extensive authentication procedure, ensuring that every purchase is made with assurance and worn with prestige. We guarantee a shopping experience free from counterfeits.

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