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The Encyclopedia of Horology

Wristwatch · GMT wristwatch

Tudor Black Bay GMT S&G

Partially verified

The Tudor Black Bay GMT S&G is a contemporary wristwatch featuring dual-time functionality. Designed as a travel instrument, it features a 41mm case constructed from stainless steel and yellow gold (S&G). The watch includes a bi-directional rotating bezel fitted with a matte, two-tone Root Beer-colored aluminum 24-hour insert. The dial is matte black with luminescent indices and Tudor's characteristic Snowflake-style hands. The watch is powered by a movement offering a GMT function, operated via an independently adjustable fourth hand, allowing for simultaneous reading of two time zones. The watch is presented on an integrated, single-piece fabric strap with steel hardware. The crystal is scratch-resistant sapphire.

Front view of the Tudor Black Bay GMT S&G, highlighting the two-tone bezel, dial, and fabric strap.
Front view of the Tudor Black Bay GMT S&G, highlighting the two-tone bezel, dial, and fabric strap. — Zamanito. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
zamanito.com
Category
Wristwatch · GMT wristwatch
Maker / attribution
Tudor
Reference
Not recorded
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
contemporary
Source-reported place
Switzerland

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Case and Dial

The Tudor Black Bay GMT S&G is housed in a 41mm stainless steel case accented with yellow gold components. The watch is defined by its two-tone aesthetic, featuring a yellow gold winding crown signed with the brand logo. A bi-directional rotating bezel is fitted with a two-tone aluminum insert calibrated for 24 hours, finished in what is described as a Root Beer color scheme.

The crystal covering the dial is scratch-resistant sapphire. The timepiece is paired with a proprietary single-piece fabric strap which utilizes steel hardware for securing the watch to the wrist.

Evidence for this section
  • “بدنه این ساعت دارای قطر ۴۱ میلی‌متر بوده و از ترکیب فولاد ضدزنگ و طلای زرد (S&G) ساخته شده است.”
  • “زهوار دوجهته چرخان ساعت به یک اینسرت آلومینیومی ۲۴ ساعته دورنگ مجهز شده”
  • “صفحه ساعت به رنگ مشکی مات با نشانگرهای شب‌نما تزیین شده و عقربه‌های نمادین موسوم به اسنوفلیک (Snowflake) جلوه شاخصی به آن بخشیده‌اند.”

Movement and Functionality

The movement within this model is engineered to provide functional GMT capabilities. It utilizes a fourth hand that can be adjusted independently of the local time, enabling the user to track a second time zone during international travel.

As a modern entry in the Black Bay collection, the movement is housed within a structure characterized by its athletic build. The mechanism is intended for high-utility use,

Evidence for this section
  • “از منظر کارکرد فنی، این مدل عملکرد واقعی GMT را از طریق عقربه چهارم با امکان تنظیم مستقل فراهم می‌سازد”
  • “خوانش هم‌زمان دو منطقه زمانی مجزا را برای سفرهای بین‌المللی ممکن می‌کند.”

Documentation and Condition

The auction description reports that while specific details regarding the service history of the movement are not present in the listing information, the physical condition of the components appears to be clean and intact.

The information provided is based on the source's description and external documentation, and the cataloguer does not independently verify the mechanical performance or authenticity of these items.

Evidence for this section
  • “جزئیات دقیقی درباره تاریخچه سرویس موتور در اطلاعات فروشنده قید نشده است”
  • “ساعت با جعبه اورجینال، دفترچه راهنما و کارت گارانتی همراه است”
  • “قطعات در وضعیت ظاهری سالم و تمیز مشاهده می‌شوند.”

Open research questions

  • What is the specific movement caliber designation used in this iteration of the Black Bay GMT S&G?
  • Does the serial number on the case back or lug correspond to the date listed on the included warranty card?

Source evidence

Recorded claims and source quotations for Tudor Black Bay GMT S&G
FieldSource-reported valueSource quotation
MakerTudor“برند: Tudor”
ModelBlack Bay GMT S&G“مدل: Black Bay GMT S&G”
Case Diameter41mm“قطر قاب: ۴۱ میلی‌متر”
Case MaterialStainless steel and yellow gold“جنس قاب: فولاد ضدزنگ و طلای زرد (Two-Tone S&G)”
BezelBi-directional 24-hour aluminum“زهوار (بزل): دوجهته با اینسرت ۲۴ ساعته آلومینیومی Root Beer”
CrystalSapphire“شیشه: کریستال سافایر (یاقوت کبود)”
GMT functionIndependent fourth hand“قابلیت دو زمانه (GMT واقعی) با عقربه چهارم با تنظیم مستقل”

Visible details

  • Case and winding crown exhibit two-tone steel and yellow gold construction
  • Dial features luminescent hour markers and signature Snowflake handset
  • Rotating bezel features a two-tone 24-hour aluminum insert
  • Watch is fitted with a single-piece black and gold-tone fabric strap

Research qualifications

  • Precise movement service history is not provided in the source
  • The source does not explicitly verify the authenticity of the accompanying documentation

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

ساعت مچی Tudor مدل Black Bay GMT S&G

Reviewed 2026-11-02 · Record cd6cc4fc18

Terms in this record

Glossary explanations for terms named in this object’s record.

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