{"product_id":"case-644-tudor-black-bay-41-black-steel-ref-79230n-0009","title":"Case #644 — Tudor Black Bay 41 “Black” Ref. M79230N-0009","description":"\u003cp data-pm-slice=\"1 1 []\"\u003e\u003cstrong\u003eCase #644 — Tudor Black Bay 41 “Black”\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eRef. M79230N-0009\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\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\u003e\u003cspan\u003eCase Notes\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Black Bay 41 in black is Tudor at its most straightforward.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA 41 mm stainless-steel case, matte black dial, black aluminum dive bezel, Snowflake hands, and rivet-style steel bracelet create a watch that feels rooted in Tudor’s dive-watch history without leaning too heavily into nostalgia.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis is the manufacture-movement generation, powered by Tudor’s MT5602 automatic calibre with COSC certification and approximately 70 hours of power reserve.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe all-black execution is also the most restrained of the classic 41 mm Black Bay colorways. Without the burgundy warmth of the red version or the cooler character of the blue, the black configuration is the easiest to wear across almost any setting.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis example dates from 2023 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\u003e\u003cspan\u003eBecause it dates from 2023, it should also retain useful Tudor factory warranty coverage, subject to the exact warranty-card date and Tudor’s five-year transferable guarantee terms.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Evidence\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eReference: M79230N-0009\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eModel: Black Bay 41\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eYear: 2023\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCase: Stainless Steel\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCase Diameter: 41 mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDial: Black\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCrystal: Sapphire\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBezel: Unidirectional Rotating Black Aluminum\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCrown: Screw-Down\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMovement: Tudor Manufacture Calibre MT5602\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMovement Type: Automatic\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCertification: COSC Chronometer\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFrequency: 28,800 VPH\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eJewels: 25\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePower Reserve: Approximately 70 Hours\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFunctions: Hours, Minutes, Central Seconds\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWater Resistance: 200 meters \/ 660 feet\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBracelet: Rivet-Style Stainless-Steel Bracelet\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 Tudor Five-Year Transferable Guarantee, Subject to Exact Card Date\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIncluded: Box, Papers, and Cards\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCollector Provenance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe 79230 generation marked the point when the Black Bay moved decisively into Tudor’s manufacture-movement era.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe earlier Black Bay had already established the design language, but the MT5602 brought a longer reserve, chronometer certification, and a more modern mechanical platform underneath the same familiar exterior.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe black version is also the most neutral of the original 41 mm trio.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIts appeal is less about color and more about proportion, legibility, and the classic Tudor combination of black dial, Snowflake handset, and steel construction.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDesign Provenance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe strongest feature here is restraint.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe black dial, black bezel, and steel case keep the palette simple, while the Snowflake hour hand and applied markers add just enough visual identity to separate it from a generic dive watch.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe rivet-style bracelet reinforces the vintage-inspired design without changing the watch into a period recreation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAt 41 mm, the case has substantial presence, but the monochrome colorway keeps the watch visually cleaner than the red or blue versions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTechnical Provenance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe MT5602 is one of Tudor’s core manufacture movements.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt runs at 28,800 vibrations per hour, carries COSC chronometer certification, and provides approximately 70 hours of power reserve.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe surrounding specification is equally straightforward: sapphire crystal, screw-down crown, unidirectional dive bezel, and 200 meters of water resistance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt is a simple mechanical package designed to be used rather than managed.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFrom the Case File\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe black Black Bay is the one that works almost anywhere.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt has enough dive-watch character to feel purposeful, but the monochrome palette makes it more versatile than many similarly sized sports watches.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCase 644 dates from 2023 and presents in Excellent Pre-Owned condition.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt includes its Box, Papers, and Cards and is currently sized for approximately a 7¾-inch wrist.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBuy with Confidence\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBST guarantees the authenticity of every watch we sell and provides a 30-day mechanical performance guarantee under normal use.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAccuracy may vary with age and service history, and water resistance is not guaranteed unless specifically stated and pressure-tested.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBST Verdict\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA classic Black Bay configuration with very little to argue with.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe black dial and bezel, 41 mm steel case, MT5602 manufacture movement, 70-hour reserve, and 200-meter capability make the M79230N-0009 one of the most straightforward and versatile watches in Tudor’s modern catalog.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCase 644 adds a 2023 date, Excellent condition, BPC, and remaining warranty potential to the most understated of the full-size Black Bay colorways.\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 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