Tudor Heritage Black Bay “Blue” | Black Dial | Blue Bezel | 41mm I Ref. 79230B

The Tudor Heritage Black Bay Ref. 79230B is a distinctive dive watch that combines vintage-inspired Tudor design with a modern manufacture movement. It features a 41mm stainless steel case, domed black dial, matte blue anodized-aluminum bezel, domed sapphire crystal, and the brand’s recognizable “Snowflake” hands. Tudor refers to the blue-bezel configuration as having a cooler, technical appearance, and collectors commonly know it as the “Midnight Blue.”

The dial offers a clean time-only layout with luminous hour markers and hands for strong legibility. Its oversized screw-down crown takes inspiration from Tudor’s historic “Big Crown” dive watches, while the blue crown tube and bezel add subtle color without taking away from the watch’s practical tool-watch character.

Powered by Tudor’s manufacture Calibre MT5602, the watch offers COSC-certified chronometer performance, a silicon balance spring, stop-seconds functionality, and an approximately 70-hour power reserve. Its unidirectional diving bezel, screw-down crown, and original 200-meter water-resistance rating make it a capable everyday sports watch with strong neo-vintage appeal.

Condition

Please review the photographs carefully for an accurate representation. Light scratches, bracelet wear, bezel wear, crystal wear, or other signs of use consistent with age may be present and do not affect functionality. The watch presents well overall with expected wear for its age.

Technical Data

• Reference: 79230B / M79230B

• Model: Tudor Heritage Black Bay

• Case Diameter: Approximately 41mm

• Case Material: Stainless Steel

• Bezel: Unidirectional Rotating Bezel with Matte Blue Anodized-Aluminum Insert

• Dial: Domed Black Dial

• Hands: Luminous Tudor “Snowflake” Hands

• Crystal: Domed Sapphire Crystal

• Crown: Screw-Down Crown with Tudor Rose and Blue Crown Tube

• Bracelet: Stainless Steel Rivet-Style Bracelet, if fitted as shown

• Movement: Tudor Manufacture Calibre MT5602

• Certification: COSC-Certified Chronometer

• Power Reserve: Approximately 70 Hours

• Frequency: 28,800 Vibrations Per Hour

• Jewels: 25

• Water Resistance: Originally rated to 200 meters; water resistance not guaranteed

• Functions: Hours, Minutes, Center Seconds, Stop-Seconds and Rotating Diving Bezel