Tudor Black Bay Ceramic Becomes First METAS Master Chronometer Certified Watch Outside Omega
Tudor Enters the METAS Master Chronometer Era
In a landmark development for the Swiss watch industry, Tudor has become the second brand in history to achieve METAS Master Chronometer certification. The Tudor Black Bay Ceramic M79210CNU, announced in May 2021, marks a significant expansion of the certification beyond Omega's exclusive domain.
What Makes This Watch Special
The Black Bay Ceramic features a 41mm matte black ceramic case with a micro-blasted finish and monobloc middle case architecture. The unidirectional bezel is constructed from PVD-coated stainless steel with a black ceramic insert featuring sunray satin finish and engraved markings.
Most importantly, the watch houses the newly developed Tudor Manufacture Calibre MT5602-1U, which has been extensively reworked to meet METAS certification standards. This includes a silicon hairspring and amagnetic components that enable resistance to magnetic fields of up to 15,000 gauss.
METAS Master Chronometer Certification Requirements
| Test Parameter | METAS Standard | COSC Standard |
|---|---|---|
| Daily Precision | 0 to +5 seconds | -4 to +6 seconds |
| Magnetic Resistance | 15,000 gauss | 60 gauss |
| Testing Method | Complete watch tested | Movement only |
| Water Resistance | ISO 22810:2010 | Not required |
Why Anti-Magnetism Matters
Modern daily life exposes mechanical watches to numerous magnetic fields from smartphones, laptops, tablet cases, and even electric vehicles. iPad cases with magnetic shut-offs generate approximately 150-200 gauss, while the ISO 6245 standard for divers' watches requires only 80 gauss resistance. The METAS-certified 15,000 gauss resistance ensures the Black Bay Ceramic remains unaffected by everyday magnetic exposure.
As noted by watch industry observers, this development represents an acknowledgement by the Rolex/Tudor family that their watches need to adapt to an increasingly magnetically hostile world. The silicon hairspring and amagnetic components naturally resist magnetic attraction without requiring magnetic shielding.
Technical Specifications
- Case: 41mm matte black ceramic, micro-blasted finish
- Dial: Matte black, no-date, with Super-LumiNova markers
- Movement: Calibre MT5602-1U, automatic, 70-hour power reserve
- Water Resistance: 200 meters
- Strap: Hybrid leather/rubber strap + additional fabric strap
- Price: EUR 4,440
Frequently Asked Questions
Q: Is METAS certification exclusive to Omega?
A: No. While Omega pioneered the certification, METAS was always designed to be available to any Swiss Made watchmaker. Tudor became the second brand to achieve it.
Q: How does METAS differ from COSC?
A: COSC tests movements outside the watch, while METAS tests the complete assembled watch for precision, magnetic resistance, water resistance, and power reserve.
Q: Does the Tudor Black Bay Ceramic need special anti-magnetic shielding?
A: No. The watch achieves anti-magnetic resistance through naturally amagnetic components, including a silicon hairspring, rather than through magnetic shielding.
Sources: Monochrome Watches, aBlogtoWatch, Tudor Official
Read more about Omega METAS Master Chronometer watches or explore our complete guide to anti-magnetic watches.