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Black bay
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Tudor

Black bay

42 · Automatic · 2018

The Tudor Black Bay Ceramic showcases a matte black ceramic case paired with a matching unidirectional rotating bezel, delivering a refined yet contemporary aesthetic. The black dial features luminous hour markers and Tudor’s iconic snowflake hands for optimal legibility in all conditions.

Specifications

Brand
Tudor
Reference
79230Dk
Case size
42
Movement
Automatic
Dial
Black
Bracelet / strap
Leather
Material
Ceramic
Style
Sport
Period
2018
Condition
Pre-owned
Accompanied by
Box and papers
$79,230Available
Enquire

Questions about this piece? Call +1 (917) 828-1306 or visit us at 36 West 47th Street, W8-9, New York City.

Winding & servicing

  • An automatic movement winds itself through the motion of your wrist. Worn daily, it will keep running; left idle it will stop after roughly 40–48 hours and simply needs a gentle shake or 20–30 manual turns of the crown to restart.
  • A watch winder is optional. If you use one, choose a low rotation setting — continuous high-speed winding adds needless wear.
  • Plan a full service every 5–7 years. A movement that is losing or gaining more than a few seconds a day, or that sounds gritty when wound, should be seen sooner.

Daily wear

  • Avoid operating the crown or pushers while the watch is wet, and always ensure the crown is fully pushed in (or screwed down) before contact with water.
  • Remove the piece before swimming in chlorinated or salt water, using a sauna or hot tub, and before contact sport or manual work. Sudden temperature change and impact are the two things a fine movement tolerates least.
  • Keep it away from strong magnets — laptop speakers, tablet covers, handbag clasps and induction hobs are the usual culprits. Magnetisation shows up as a watch suddenly running fast, and is easily reversed by a watchmaker.

Cleaning

  • Wipe the case and bracelet with a soft, dry microfibre cloth after each wear to lift skin oils and dust before they build up in the joints.
  • Keep the leather strap dry. Leather and water are not friends: repeated wetting causes the strap to stiffen, crack and eventually separate at the stitching. A well-worn strap is a consumable — plan on replacing it every 1–2 years of regular wear.
  • Never use ultrasonic cleaners, solvents, or commercial jewellery dips at home on a watch — they can strip lume, degrade gaskets and damage set stones.

Storage

  • Store in a dry place at stable room temperature, away from direct sunlight — prolonged UV fades dials and ages strap leather.
  • Keep pieces separated in a lined box or soft pouch so cases and stones cannot rub against one another. Diamond is hard enough to scratch virtually anything it shares a drawer with.
  • Retain the original box, papers and any accessories supplied. They materially affect the value should you ever sell or trade the piece.

Water resistance

  • Water resistance is a seal condition, not a permanent specification. Gaskets harden and shrink with age, so a rating stamped on the case back decades ago tells you little about the watch today.
  • Have the case pressure-tested annually, and always after the case back has been opened for any reason.
  • Vintage pieces should be treated as not water resistant regardless of their original rating.