TUDOR · Clair de Rose
TUDOR Clair de Rose M35800-0001: specifications and what to check
Calibre T601 and 38 hours, not a Manufacture movement and not seventy. The sheet says so plainly, and a listing that implies otherwise is wrong.
Reference M35800-0001 · specifications read from the manufacturer on 2026-09-23 · listed as current
Specifications
As published by TUDOR. A field the manufacturer does not state is left out rather than filled in.
- Case
- 34mm steel case with polished finish
- Diameter
- 34 mm
- Water resistance
- Waterproof to 100m (330 ft)
- Crystal
- Domed sapphire crystal
- Bezel
- Smooth steel bezel with polished finish
- Dial
- Opaline
- Crown
- Steel screw-down winding crown with a transparent blue spinel cabochon
- Bracelet
- Steel bracelet with steel attachments
- Clasp
- Folding clasp with safety catch
Movement
- Calibre
- Calibre T601
- Type
- Self-winding mechanical movement
- Power reserve
- Approximately 38 hours
- Notes
- TUDOR does not describe this calibre as a Manufacture movement and lists no chronometer certification for this reference. A five-year transferable guarantee is stated, with no registration or periodic maintenance checks required.
What to check before you buy
- Quote the calibre as T601 and the reserve as approximately 38 hours. TUDOR does not call this a Manufacture movement and lists no COSC certification, unlike most of the references documented here.
- Expect it to stop after a day and a half off the wrist, and tell the buyer so, because thirty-eight hours is far short of the seventy most of the range carries.
- Inspect the blue spinel cabochon in the crown for chips and confirm it is seated. It is a set stone in a working, screw-down component.
- Grade the fully polished case and bezel under a raking light, since there is no satin surface anywhere to disguise handling marks.
- Check the crown still screws down cleanly despite the cabochon, as the stone makes the crown awkward to grip and encourages cross-threading.
What the movement line does not say
TUDOR's movement specification for this reference is short: self-winding mechanical movement, Calibre T601, with a power reserve of approximately 38 hours.
Read what is absent, because it is unusual within the brand.
There is no "Manufacture" in the calibre description. Nearly every other TUDOR documented on this site carries a Manufacture Calibre designation — MT5400, MT5612, MT5652, MT5813, MT5633.
There is no COSC and no chronometer certification of any kind listed.
And the reserve is 38 hours, where the Manufacture calibres are specified at approximately 70.
None of that makes this a lesser watch in any way the buyer has not been told about. What it does mean is that a listing which borrows the language of the rest of the range — "Manufacture calibre, COSC, 70-hour power reserve" — is making three claims TUDOR does not make about this reference.
Write the T601 as TUDOR writes it.
Thirty-eight hours changes ownership
The practical consequence of a 38-hour reserve is a watch that stops if it is put down for a day and a half.
Off the wrist on Friday evening, stopped by Sunday morning — reliably, every time. Not a fault, simply the specification.
Buyers coming from a seventy-hour movement, and buyers who own several watches and rotate them, will interpret a stopped watch as a defect. One sentence in the description prevents the phone call.
It also limits what you can test. There is no weekend reserve run available here; if you want to check it makes its stated 38 hours, wind it fully and check back the following afternoon.
A stone in a working crown
The crown specification is distinctive: a steel screw-down winding crown with a transparent blue spinel cabochon.
A cabochon is a domed, unfaceted stone, and here it is set into a component that screws down and is handled every time the watch is set.
Two checks follow.
The stone. Under a loupe, look for chips along the edge where it meets the setting, and confirm it sits firm rather than moving under light pressure. A stone is a replaceable part in principle, and a conspicuously missing or damaged one is a real deduction.
The thread. A domed stone makes the crown harder to grip, which encourages people to start the thread at an angle. Unscrew and rescrew it several times, feeling for the thread to bite cleanly on the first quarter turn. Cross-threading damages the tube, and the tube is part of the case.
Polished everywhere, and nowhere to hide
The case is 34mm steel with a polished finish, the bezel smooth steel with a polished finish.
No satin, no brushing, no grained surface anywhere on the exterior — which makes this the least forgiving case to grade of any TUDOR documented here. Every mark sits on a mirror.
Take it to a window, tilt it until a straight edge reflects along the case side, and follow that reflection all the way round. Then do the same across the bezel. You are reading accumulated haze as much as individual scratches, because on a fully polished small case haze is what determines how the watch looks in daylight.
The rest of the sheet
100m (330 ft) behind a screw-down crown, a domed sapphire crystal, an opaline dial, and a steel bracelet with steel attachments closed by a folding clasp with safety catch.
TUDOR does state a five-year transferable guarantee for this reference, with no registration or scheduled servicing required — so find the original purchase date, because remaining cover transfers to the buyer.
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Sources
Not affiliated with TUDOR. Specifications are read from the manufacturer's own published documentation on the date shown and may change; the manufacturer's current documentation governs.