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1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errorsThe standard 42 mm Tudor Pelagos is the more affordable, slightly smaller option, with a date and an approximately 70-hour power reserve. The 43 mm Pelagos Ultra costs $875 more at TUDOR’s displayed US suggested retail prices and adds a 1,000 m rating, METAS Master Chronometer certification and a redesigned T-fit bracelet. It also has a shorter stated reserve and no date listed in its specifications. This comparison covers the current black-dial Pelagos, reference M25600TN-0001, and Pelagos Ultra, reference M2543C1A7NU-0001—not the Pelagos 39 or Pelagos LHD.
Pelagos vs. Pelagos Ultra: the key differences
The specifications and prices below are from TUDOR’s US product pages, observed in 2026. Prices are suggested retail prices and may change; they are not guaranteed transaction prices.
| Specification | Pelagos M25600TN-0001 | Pelagos Ultra M2543C1A7NU-0001 |
|---|---|---|
| US suggested retail price | $6,025 (TUDOR listing observed in 2026) | $6,900 (TUDOR listing observed in 2026) |
| Case | 42 mm; titanium and steel; 14.3 mm thick | 43 mm; titanium; 14.5 mm thick |
| Lug width | 22 mm | 22 mm |
| Water resistance | 500 m (1,640 ft) | 1,000 m (3,280 ft), stated by TUDOR as in accordance with ISO standard |
| Movement and certification | Manufacture calibre MT5612; COSC-certified | Manufacture calibre MT5612-U; COSC- and METAS Master Chronometer-certified |
| Stated power reserve | Approximately 70 hours | 65 hours |
| Dial | Black, white indices, date at 3 o’clock | Matte black with sandblasted flange; no date listed in TUDOR’s specifications |
| Bracelet | Titanium bracelet; steel folding clasp and safety catch; TUDOR-developed extension system | Titanium three-link bracelet; T-fit folding clasp, safety catch and diver’s extension with visual indicator |
| Included rubber strap | Black rubber strap, buckle and extra extension piece | Black rubber strap with pin buckle and diver’s extension |
| Guarantee | Five-year transferable guarantee; no registration or periodic maintenance checks required | Same stated guarantee terms |
Sources: TUDOR Pelagos M25600TN-0001 and TUDOR Pelagos Ultra M2543C1A7NU-0001.
What the $875 price difference buys
At the displayed US suggested retail prices, the Ultra is $875 above the standard Pelagos: $6,900 versus $6,025. Its distinct upgrades are the 1,000 m rating, METAS Master Chronometer certification, titanium case and T-fit clasp with a visual setting indicator. Whether those are worth the premium depends on whether you value those specific features; the price alone does not establish better value.
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TUDOR positions the Ultra for deep-sea diving and describes the 1,000 m rating in product-marketing language. The standard Pelagos is rated to 500 m. Both ratings exceed what ordinary swimming requires, so the higher figure is most relevant if your intended use or preference specifically calls for the Ultra’s rating. TUDOR lists a helium escape valve for both models. TUDOR Pelagos collection.
Case size and fit
The Ultra is 1 mm wider and 0.2 mm thicker by TUDOR’s measurements. Both have 22 mm lug widths. Those figures do not by themselves establish which watch will fit better: wrist shape, lug reach, bracelet adjustment and personal preference all matter. If fit is decisive, try both on rather than relying on diameter alone. The listed dimensions do not establish comparative wrist comfort or weight in wear.
Rank #2
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Movement, certification and power reserve
The standard Pelagos uses TUDOR’s MT5612, which is COSC-certified and specified with approximately 70 hours of reserve. The Ultra’s MT5612-U is COSC- and METAS Master Chronometer-certified, with a stated 65-hour reserve. Certification and reserve are separate considerations: the Ultra has the additional METAS certification, while the standard model has the longer stated reserve. These specifications do not establish that one will be more accurate in your daily wear.
TUDOR says the MT5612 runs at 28,800 beats per hour (4 Hz), has an instant date display and a silicon balance spring. It describes the approximately 70-hour reserve as enough to take the watch off on Friday evening and put it on again Monday morning without winding. That explanation applies to the MT5612; the Ultra has a different calibre and its listed reserve is 65 hours. TUDOR Manufacture Calibre MT5612.
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Date display and bracelet features
Date or a cleaner dial?
The standard Pelagos has a date at 3 o’clock. TUDOR’s Ultra specification lists a matte black dial but no date. If you regularly use a date display, that is a practical reason to favor the standard model; if you prefer the Ultra’s dial as specified, the lack of a listed date is part of the trade-off.
Bracelet adjustment and included strap
The Ultra’s T-fit clasp adds a visual setting indicator and is paired with a diver’s extension. The standard model has a TUDOR-developed extension system. Both watches include a black rubber strap, so a rubber option is not an add-on exclusive to either model. The listed strap and clasp details differ, so confirm precise compatibility before buying replacement straps or accessories. TUDOR’s collection page describes the Ultra clasp and strap: Pelagos collection.
Rank #4
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Which Pelagos should you choose?
Choose the standard Pelagos if…
- You want the lower displayed US suggested retail price.
- You prefer the 42 mm case and want to compare it directly with the Ultra’s 43 mm case.
- You use a date display.
- You value the approximately 70-hour stated reserve more than the Ultra’s additional certification.
Choose the Pelagos Ultra if…
- You specifically want its 1,000 m water-resistance rating and deep-diving positioning.
- METAS Master Chronometer certification is an important distinction for you.
- You prefer the T-fit clasp with its visual indicator and diver’s extension.
- You are comfortable paying the listed $875 premium and with a 65-hour reserve and no date listed in the specifications.
Neither watch is an automatic upgrade over the other. Decide using the features you will actually use, then check the fit in person if possible.
Quick Recap
Best Value
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- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
