Watch reference library
Tudor Pelagos 25600TN
In production 2015 to present.
The Tudor Pelagos 25600TN is a 42mm titanium watch with the calibre MT5612, water resistant to 500 meters, made 2015 to present.
Specifications
- Case size
- 42mm
- Case material
- Titanium
- Bezel
- Unidirectional rotating, black ceramic insert
- Dial
- Black, with luminescent Snowflake hands and geometric indexes
- Movement
- Tudor manufacture caliber MT5612, automatic, COSC-certified
- Power reserve
- About 70 hours
- Water resistance
- 500 meters
- Crystal
- Scratch-resistant sapphire
- Bracelet
- Titanium, with a rapid adjustment clasp system
The story
Tudor introduced the Pelagos in 2012 as a professional dive watch positioned above the Black Bay line, with a lightweight titanium case, a helium escape valve, and a 500 meter depth rating aimed squarely at commercial and technical diving use rather than only recreational wear. The original version, the ref. 25500TN, used an ETA-based automatic movement. In 2015, Tudor updated the line with the ref. 25600TN, which kept the same 42mm titanium case, black ceramic bezel, and 500 meter water resistance as its predecessor but replaced the ETA movement with Tudor's own manufacture Caliber MT5612, raising the power reserve to about 70 hours. The update was introduced alongside a new blue-dial sibling, the ref. 25600TB. The Pelagos has continued to serve as Tudor's flagship dive watch, distinguished from the Black Bay dive watches by its titanium construction, helium escape valve, and significantly deeper water resistance rating.
What to check before you buy
Buyers should not confuse the 25600TN with the earlier 25500TN; both look similar, but the movement, power reserve, and case-back markings differ, so checking the reference number is the reliable way to identify which generation a given watch is. The titanium bracelet's clasp includes a spring-loaded rapid adjustment system designed to compensate for wetsuit thickness or wrist swelling, and buyers should test that this mechanism still functions smoothly. Because titanium is lighter but also softer in some respects than steel, buyers should inspect the case and bracelet for deep scratches or dents, and confirm the ceramic bezel insert is free of chips.
Buying or selling a 25600TN?
Selling one? Text photos to (605) 521-2821 for an offer within hours, or ask for one below. Moda pays by wire or Zelle within 24 hours of receiving the watch, on its own insured label. Rather sell it yourself? Post it in the Moda watch groups and run the listing through the Post Checker first. Buying one from someone you don't know? Moda's middleman service inspects the watch at Moda HQ and the buyer pays the seller only after approving the condition report. When it ships, it goes fully insured through ShipIFS, the shipping vendor Moda uses for its own watches.
Moda Watch Club is the Moda group for luxury watches, and Moda Watch Club: 10K & Under covers watches below that line. Both are free to join with a join code.
Common questions
What makes the Pelagos different from the Tudor Black Bay?
The Pelagos uses a titanium case and bracelet, has a helium escape valve, and is rated to 500 meters of water resistance, making it a more purpose-built professional dive watch compared to the vintage-styled steel Black Bay.
What movement is in the 25600TN?
It uses Tudor's manufacture Caliber MT5612, a self-winding, COSC-certified movement with about 70 hours of power reserve, introduced with this reference in 2015.
Why does the Pelagos have a helium escape valve?
The valve allows trapped helium gas to escape from the case during decompression after saturation diving, a feature aimed at commercial and technical divers rather than typical recreational use.
Is the 25600TN heavier or lighter than a steel dive watch of similar size?
It is notably lighter, since titanium weighs significantly less than stainless steel, which is one of the model's selling points for daily wear despite its large 42mm case.
What replaced the original Pelagos 25500TN?
The 25500TN was replaced by the 25600TN in 2015, which kept the same case size and water resistance but added Tudor's in-house MT5612 movement.