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The Encyclopedia of Horology

Wristwatch · Diver's wristwatch

Tudor Black Bay Fifty-Eight ref. 79030N

Partially verified

The Tudor Black Bay Fifty-Eight, reference 79030N, is a contemporary stainless steel diver's wristwatch. The watch features a 39mm diameter case, which is intended to balance traditional proportions with modern specifications. The black dial is configured with gilt-style gold-toned hour markers and the characteristic Snowflake hands. The unidirectional rotating bezel incorporates a red triangle at the 12 o'clock position, referencing historical diver models from the manufacturer. Internally, the watch is powered by the Tudor Calibre MT5402, an automatic movement featuring a silicon balance spring, 27 jewels, and an approximate 70-hour power reserve. It has received COSC chronometer certification. This example is presented on a black and gold fabric NATO-style strap with a steel buckle and is accompanied by an instruction manual and original hangtags. The model serves as a modern iteration of the brand's first 200-meter diver's watch originally released in 1958.

Front view of the Tudor Black Bay Fifty-Eight showing the dial, Snowflake hands, and the black fabric strap.
Front view of the Tudor Black Bay Fifty-Eight showing the dial, Snowflake hands, and the black fabric strap. — Zamanito. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
zamanito.com
Category
Wristwatch · Diver's wristwatch
Maker / attribution
Tudor
Reference
79030N
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
Introduced 2018
Source-reported place
Not established

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 watch features a stainless steel case with a diameter of 39mm. It is designed to provide a specific balance between historical aesthetics and modern functionality. The dial is black with gilt-toned markers for the hour indices and the Snowflake hand design, a hallmark of the manufacturer's diver collection.

The bezel is unidirectional and black, featuring a red-colored triangle at the 12 o'clock position, an element noted by the source as an acknowledgement of the brand's historical diver watches. The watch is fitted with a textile NATO-style strap in black and gold with a steel buckle.

Evidence for this section
  • “بدنه این ساعت از جنس استیل ضد زنگ و با قطر ۳۹ میلی‌متر ساخته شده است”
  • “صفحه نمایش مشکی این مدل بسیار خوانا و ساده طراحی شده است. استفاده از جزئیات طلایی رنگ (gilt) و عقربه‌های معروف به Snowflake”
  • “مثلث قرمز رنگ در موقعیت ساعت ۱۲ روی قاب چرخشی (bezel)، ادای احترامی به ساعت‌های غواصی تاریخی این برند است.”

Movement

The internal mechanism is the proprietary Tudor Calibre MT5402. The movement is an automatic caliber that has obtained COSC chronometer certification.

The technical specifications of the movement include 27 jewels and the integration of a silicon balance spring. The power reserve is approximately 70 hours.

Evidence for this section
  • “در قلب این ساعت، کالیبر اختصاصی MT5402 قرار دارد که توسط خود Tudor ساخته شده است”
  • “این موتور اتوماتیک دارای گواهی COSC بوده و از ۲۷ جواهر و فنر تعادل سیلیکونی بهره می‌برد. همچنین، این موتور توان ذخیره انرژی تا ۷۰ ساعت را فراهم می‌کند.”

Context and Accessories

The Black Bay Fifty-Eight reference 79030N was introduced in 2018. The design of the watch draws inspiration from the first 200-meter diver watch produced by Tudor, which was released in 1958.

The watch is supplied with documentation, including an instruction manual and original hangtags. The manufacturer positions the watch as a modern sports timepiece, noted for its construction quality.

Evidence for this section
  • “معرفی شده در سال ۲۰۱۸ با الهام از مدل سال ۱۹۵۸”
  • “این ساعت به همراه دفترچه راهنمای اصلی و تگ‌های آویز (hangtags) ارائه می‌شود.”
  • “این رفرنس به دلیل کیفیت ساخت و طراحی بی‌نقص، جایگاه خود را در میان ساعت‌های اسپرت مدرن تثبیت کرده است.”

Open research questions

  • Is the fabric strap a factory-original accessory specifically sold with this reference or an aftermarket addition?
  • Are there any variations in the case back or movement finishing for this reference depending on the production year?

Source evidence

Recorded claims and source quotations for Tudor Black Bay Fifty-Eight ref. 79030N
FieldSource-reported valueSource quotation
MakerTudor“برند: Tudor”
ModelBlack Bay Fifty-Eight“مدل: Black Bay Fifty-Eight”
Reference79030N“رفرنس: 79030N”
Case diameter39mm“قطر بدنه: 39 میلی‌متر”
MovementCalibre MT5402“کالیبر: MT5402”
Power reserve70 hours“ذخیره انرژی: 70 ساعت”
InclusionsInstruction manual and hangtags“اقلام همراه: دفترچه راهنما و تگ‌های آویز”

Visible details

  • 39mm stainless steel case
  • Snowflake hands with gilt-style indices
  • Black unidirectional bezel with a red triangle marker at 12 o'clock
  • Textured black and gold fabric strap

Research qualifications

  • The manufacture country is not specified in the provided text.
  • The accuracy of the reported COSC status and movement specifications relies entirely on the provided source information.

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

Consulted source

ساعت مچی Tudor Black Bay Fifty-Eight رفرنس 79030N

Reviewed 2026-11-02 · Record 947695cd7f

Terms in this record

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

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