{"product_id":"case-664-omega-seamaster-diver-300-black-ref-210-30-42-20-01-010","title":"Case #664 — Omega Seamaster Diver 300 (Black\/Mesh) Ref. 210.30.42.20.01.010","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eCase #664 — Omega Seamaster Diver 300 (Black\/Mesh) Ref. 210.30.42.20.01.010\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eStatus: Available\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCondition: Very Good Pre-Owned\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eScope: Inner Omega Wooden Box, Papers, and Cards\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCase Notes\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis is the Seamaster Diver 300M stripped back to its essentials.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eNo date window. No polished ceramic dial. No standard multi-link bracelet.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eInstead, Omega gave this generation a black aluminum dial with a fine laser-engraved wave pattern, a matching black anodized aluminum bezel, a domed sapphire crystal, and a brushed stainless-steel mesh bracelet. The result feels cleaner, more vintage-inspired, and noticeably different from the familiar ceramic-wave Seamaster that defined the previous generation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe dial is especially effective. The black aluminum has a softer, less reflective character than ceramic, while the no-date layout restores perfect symmetry to the face. Combined with the mesh bracelet, it gives the watch a distinctly tool-watch personality without sacrificing the modern engineering underneath.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePower comes from Omega’s Co-Axial Master Chronometer Calibre 8806, visible through the sapphire exhibition caseback and offering approximately 55 hours of power reserve.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis example dates from 2025 and presents in Very Good Pre-Owned condition. It includes its Omega inner wooden box, papers, and cards, and the factory mesh bracelet will accommodate approximately an 8-inch wrist.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Evidence\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eReference: 210.30.42.20.01.010\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eModel: Seamaster Diver 300M\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eYear: 2025\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCase: Stainless Steel\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCase Diameter: 42 mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThickness: 13.8 mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLug-to-Lug: 49.7 mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLug Width: 20 mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDial: Black Aluminum with Laser-Engraved Wave Pattern\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCrystal: Domed Sapphire with Anti-Reflective Treatment\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBezel: Black Oxalic-Anodized Aluminum, Unidirectional, with White Super-LumiNova Diving Scale\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCrown: Screw-Down\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eHelium Escape Valve: Yes\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCaseback: Sapphire Exhibition\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMovement: Omega Co-Axial Master Chronometer Calibre 8806\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMovement Type: Automatic\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCertification: METAS Master Chronometer\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFrequency: 25,200 VPH\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eJewels: 35\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePower Reserve: Approximately 55 Hours\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFunctions: Hours, Minutes, Central Seconds\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWater Resistance: 300 meters \/ 1,000 feet\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBracelet: Brushed Stainless-Steel Mesh\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eClasp: Folding Clasp\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFit: Up to Approximately 8-inch Wrist\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCondition: Very Good Pre-Owned\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIncluded: Inner Omega Wooden Box, Papers, and Cards\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCollector Provenance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis reference marks an important design shift within the modern Seamaster Diver 300M family.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eOmega retained the familiar 42 mm case, skeletonized hands, helium escape valve, and 300-meter capability, but changed the visual character significantly by moving from polished ceramic to aluminum for both the dial and bezel.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe no-date layout matters as well. Removing the date window gives the dial a cleaner, more balanced appearance and moves the watch closer to the stripped-down aesthetic of earlier professional dive watches.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe mesh bracelet completes the change. Rather than the conventional Seamaster bracelet, Omega paired this reference with a brushed Milanese-style steel mesh bracelet, giving it a more vintage-informed and slightly more utilitarian profile.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eDesign Provenance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBlack aluminum behaves differently from ceramic.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIt does not have the same glossy, almost liquid surface. Instead, the dial absorbs more light, allowing the engraved wave pattern and luminous markers to do the visual work.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe domed sapphire crystal adds another layer of vintage character, while the brushed mesh bracelet gives the watch a lower-key, more tool-oriented feel than the familiar polished-and-brushed link bracelet.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe result is still unmistakably a Seamaster, but the personality is quieter, more symmetrical, and more historically grounded.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eTechnical Provenance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eInside is Omega’s Master Chronometer Calibre 8806.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe movement is METAS-certified, runs at 25,200 vibrations per hour, uses Omega’s Co-Axial escapement, and provides approximately 55 hours of power reserve.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIt is also highly resistant to magnetic fields and visible through the sapphire caseback.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe surrounding hardware is equally serious: screw-down crown, helium escape valve, unidirectional dive bezel, sapphire crystal, and 300 meters of water resistance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFrom the Case File\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis is one of the easiest modern Seamaster configurations to understand once it is on the wrist.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe no-date dial is balanced. The aluminum surfaces are less flashy. The mesh bracelet conforms closely to the wrist and changes the entire feel of the watch compared with the standard steel bracelet.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis 2025 example presents in Very Good Pre-Owned condition and includes its inner Omega wooden box, papers, and cards.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe mesh bracelet will accommodate approximately an 8-inch wrist.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor a buyer who likes the modern Seamaster platform but prefers a cleaner, less polished execution, this is the reference to look at.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBST Verdict\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eA modern Seamaster with a distinctly different personality.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe no-date layout, black aluminum dial and bezel, domed sapphire crystal, brushed mesh bracelet, and Calibre 8806 combine into one of the most restrained and cohesive Diver 300M configurations Omega has produced in recent years.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCase 664 adds a 2025 date, Very Good condition, papers and cards, and generous bracelet sizing to a reference that already stands apart from the standard ceramic-wave models.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEvery case deserves a closer look.\u003c\/span\u003e\u003c\/p\u003e","brand":"Baker Street Timepieces","offers":[{"title":"Default Title","offer_id":58480577904943,"sku":null,"price":5750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0948\/5359\/5439\/files\/BST_6595.jpg?v=1789573712","url":"https:\/\/bakerstreettimepieces.com\/products\/case-664-omega-seamaster-diver-300-black-ref-210-30-42-20-01-010","provider":"Baker Street Timepieces","version":"1.0","type":"link"}