{"product_id":"case-686-omega-seamaster-300-white-ref-210-30-42-20-04-001","title":"Case #686 — Omega Seamaster 300 (White) Ref. 210.30.42.20.04.001","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCase #686 — Omega Seamaster 300 (White) Ref. 210.30.42.20.04.001\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eStatus: Available\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCondition: Excellent Pre-Owned\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eScope: 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\u003eThe white-dial Seamaster Diver 300M is one of the sharpest modern executions of Omega’s signature dive watch.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe polished white ceramic dial carries the collection’s laser-engraved wave pattern, contrasted by a black ceramic bezel, black hands and indexes, and the familiar skeletonized handset. Against the stainless-steel case and bracelet, the result is bright, highly legible, and immediately recognizable without becoming flashy.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAt 42 mm, it has the full presence of a modern Seamaster, while the case architecture and articulated bracelet keep it balanced on the wrist.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eInside is Omega’s Co-Axial Master Chronometer Calibre 8800, offering approximately 55 hours of power reserve, strong anti-magnetic resistance, and METAS certification.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis example dates from 2025 and presents in Excellent Pre-Owned condition. It includes its Box, Papers, and Cards and is currently sized for approximately a 7¾-inch wrist.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBecause it dates from 2025, it retains substantial Omega factory warranty coverage, subject to the exact warranty-card date and Omega terms.\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: 210.30.42.20.04.001\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\u003eLug Width: 20 mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDial: White Ceramic 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 Ceramic, Unidirectional\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 8800\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\u003ePower Reserve: Approximately 55 Hours\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFunctions: Hours, Minutes, Central Seconds, Date\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWater Resistance: 300 meters \/ 1,000 feet\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBracelet: Stainless Steel\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBracelet Fit: Approximately 7¾-inch wrist\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCondition: Excellent Pre-Owned\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFactory Warranty: Remaining Omega Five-Year Factory Warranty, Subject to Exact Card Date\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIncluded: 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\u003eThe Seamaster Diver 300M has been one of Omega’s defining sports watches since 1993.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe current generation brought the collection fully into Omega’s ceramic and Master Chronometer era, combining the familiar wave dial, skeletonized hands, helium escape valve, and scalloped bezel with a modern movement visible through a sapphire caseback.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe white dial gives the design a very different character from the more common blue and black executions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIt is brighter, cleaner, and more graphic, with the black bezel and handset providing enough contrast to keep the watch firmly in tool-watch territory.\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\u003eThe dial is the centerpiece.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhite ceramic creates a crisp surface that changes subtly with lighting while allowing the engraved wave pattern to remain visible without becoming dominant.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe black ceramic bezel frames the dial sharply, while the steel bracelet gives the watch enough visual weight to balance the bright center.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe result is one of the most recognizable modern Seamaster configurations.\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\u003eThe Calibre 8800 is one of Omega’s core Master Chronometer movements.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIt uses Omega’s Co-Axial escapement, provides approximately 55 hours of power reserve, and is certified by METAS after testing of the fully assembled watch.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe movement is also highly resistant to magnetic fields, making it particularly well suited to everyday modern use.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe surrounding hardware is equally serious: screw-down crown, helium escape valve, sapphire crystal, ceramic dive bezel, 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 a full-strength modern Seamaster in one of its cleanest colorways.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe 42 mm case has substantial presence, but the white dial keeps the watch feeling open and bright rather than heavy.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCase 686 dates from 2025, presents in Excellent Pre-Owned condition, includes Box, Papers, and Cards, and is sized for approximately a 7¾-inch wrist.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIt also retains substantial Omega factory warranty coverage.\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\u003eOne of the strongest core Seamaster 300M configurations.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe white ceramic wave dial, black ceramic bezel, steel bracelet, Calibre 8800, and 300-meter capability give the watch a distinctive look without sacrificing any of the practical strengths that make the Diver 300M such an easy everyday sports watch.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCase 686 adds a 2025 date, Excellent condition, BPC, and plenty of remaining factory warranty.\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":58531888234799,"sku":null,"price":4461.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0948\/5359\/5439\/files\/BST_6799.jpg?v=1790182277","url":"https:\/\/bakerstreettimepieces.com\/products\/case-686-omega-seamaster-300-white-ref-210-30-42-20-04-001","provider":"Baker Street Timepieces","version":"1.0","type":"link"}