What is your watch doing?
Pick the symptom, tell us which Tudor it is, and we'll show you what the research actually says — including the "faults" that usually turn out not to be faults at all.
What is your watch doing?
Pick the one that matches best. If more than one applies, start with whichever worries you most — you can come back and try another.
Chronograph won't reset to zero
The coupling is under load. Continuing can bend the hammer or heart piece.
Read more: The chronograph that won't reset to zero, The Heritage Chrono's Dubois Dépraz module
Condensation or fog under the crystal
Corrosion starts within hours. Pull the crown out to stop and vent it.
Read more: Moisture inside the case
Crown won't screw down
Zero water resistance now, and forcing it destroys more thread with each attempt.
Read more: The crown you're about to strip
Grinding or metallic scraping
Metal on metal. Every turn creates more damage and more debris. A loose rotor, screw or detached part is circulating inside a lubricated mechanism.
Read more: Rotor noise
Hands stopped but the seconds hand keeps running
An escapement, train or hairspring fault — or debris.
Read more: The hands stopped but the seconds hand kept going
Water inside the case
Corrosion starts within hours. Pull the crown out to stop and vent it.
Read more: Moisture inside the case
Which Tudor is it?
The reference off the caseback, the rehaut, or the guarantee card — or the model name if it's a current in-house calibre.
I don't know my reference
Look for it in one of three places:
- Caseback — stamped into the metal on the back of the watch.
- Rehaut — engraved on the inner ring under the crystal, on most watches made since the late 2010s. Often prefixed with an "M".
- Guarantee card — printed in the reference field of the card that came with the watch.
Still not sure? Tell us the era instead
We'll show what applies across the whole era rather than to one exact calibre.
Your result
Your movement
Vintage · introduced 1954
Tudor 390
Your movement
Vintage
Tudor 2461
Your movement
Vintage
ETA 2483
Your movement
Vintage
ETA 2484
Your movement
Vintage
ETA 2776
Your movement
Vintage
ETA 2783 / 2784
Your movement
Vintage
Valjoux 7734
Your movement
Vintage
Valjoux 234
Your movement
Vintage
Valjoux 7750
Your movement
Modern ETA
T601 (Calibre 2824)
Your movement
Modern ETA
T603
Your movement
Modern ETA
T201
Your movement
Modern ETA
T401
Your movement
Modern ETA
T401-901
Your movement
Modern ETA
Valjoux 7750
Your movement
Modern ETA
ETA 7753
Your movement
In-house MT · introduced 2015
MT5621
Your movement
In-house MT · introduced 2015
MT5612
Your movement
In-house MT · introduced 2016
MT5601
Your movement
In-house MT · introduced 2016
MT5602
Your movement
In-house MT · introduced 2023
MT5602-U
Your movement
In-house MT · introduced 2018
MT5652
Your movement
In-house MT · introduced 2022
MT5652-U
Your movement
In-house MT · introduced 2018
MT5402
Your movement
In-house MT · introduced 2023
MT5400
Your movement
In-house MT · introduced 2026
MT5400-U
Your movement
In-house MT · introduced 2024
MT5450-U
Your movement
In-house MT · introduced 2017
MT5813
Your movement
Vintage · 1955–1990
Fleurier-based and early ETA movements. Submariners, Oyster Princes, Rangers, the Monte Carlo and Home Plate chronographs, the Big Block.
You told us the era, not the exact calibre, so an exact power reserve and accuracy figure aren't shown — they vary between the calibres in this era. Look up your exact calibre for precise figures.
Your movement
Modern ETA · 1990–2016
Top Grade ETA ebauches, modified by Tudor. Prince Date, Submariner 79090, the first-generation Black Bay and Pelagos, Heritage Chrono.
You told us the era, not the exact calibre, so an exact power reserve and accuracy figure aren't shown — they vary between the calibres in this era. Look up your exact calibre for precise figures.
Your movement
In-house MT · 2015–present
Manufacture calibres made by Kenissi. Every current Black Bay, Pelagos, Ranger and Black Bay Chrono.
You told us the era, not the exact calibre, so an exact power reserve and accuracy figure aren't shown — they vary between the calibres in this era. Look up your exact calibre for precise figures.
No documented match for this pairing
We don't have a specific write-up connecting “Chronograph won't reset to zero” to that exact movement. That doesn't mean nothing is wrong — it means this particular combination isn't in our data yet.
Related reading:
No documented match for this pairing
We don't have a specific write-up connecting “Condensation or fog under the crystal” to that exact movement. That doesn't mean nothing is wrong — it means this particular combination isn't in our data yet.
Related reading:
No documented match for this pairing
We don't have a specific write-up connecting “Crown won't screw down” to that exact movement. That doesn't mean nothing is wrong — it means this particular combination isn't in our data yet.
Related reading:
No documented match for this pairing
We don't have a specific write-up connecting “Date crawls or changes slowly” to that exact movement. That doesn't mean nothing is wrong — it means this particular combination isn't in our data yet.
Related reading:
No documented match for this pairing
We don't have a specific write-up connecting “Date won't change” to that exact movement. That doesn't mean nothing is wrong — it means this particular combination isn't in our data yet.
Related reading:
No documented match for this pairing
We don't have a specific write-up connecting “Dial bubbling, lacquer decay, or spotting” to that exact movement. That doesn't mean nothing is wrong — it means this particular combination isn't in our data yet.
Related reading:
No documented match for this pairing
We don't have a specific write-up connecting “Rate wanders day to day” to that exact movement. That doesn't mean nothing is wrong — it means this particular combination isn't in our data yet.
Related reading:
No documented match for this pairing
We don't have a specific write-up connecting “Grinding or metallic scraping” to that exact movement. That doesn't mean nothing is wrong — it means this particular combination isn't in our data yet.
Related reading:
No documented match for this pairing
We don't have a specific write-up connecting “Hands stopped but the seconds hand keeps running” to that exact movement. That doesn't mean nothing is wrong — it means this particular combination isn't in our data yet.
Related reading:
No documented match for this pairing
We don't have a specific write-up connecting “Rotor noise” to that exact movement. That doesn't mean nothing is wrong — it means this particular combination isn't in our data yet.
Related reading:
No documented match for this pairing
We don't have a specific write-up connecting “Rotor spins freely when hand-winding” to that exact movement. That doesn't mean nothing is wrong — it means this particular combination isn't in our data yet.
Related reading:
No documented match for this pairing
We don't have a specific write-up connecting “Running fast” to that exact movement. That doesn't mean nothing is wrong — it means this particular combination isn't in our data yet.
Related reading:
No documented match for this pairing
We don't have a specific write-up connecting “Running slow” to that exact movement. That doesn't mean nothing is wrong — it means this particular combination isn't in our data yet.
Related reading:
No documented match for this pairing
We don't have a specific write-up connecting “Worried about service cost” to that exact movement. That doesn't mean nothing is wrong — it means this particular combination isn't in our data yet.
Related reading:
No documented match for this pairing
We don't have a specific write-up connecting “Short power reserve” to that exact movement. That doesn't mean nothing is wrong — it means this particular combination isn't in our data yet.
Related reading:
No documented match for this pairing
We don't have a specific write-up connecting “Water inside the case” to that exact movement. That doesn't mean nothing is wrong — it means this particular combination isn't in our data yet.
Related reading:
No documented match for this pairing
We don't have a specific write-up connecting “Won't hold a charge” to that exact movement. That doesn't mean nothing is wrong — it means this particular combination isn't in our data yet.
Related reading:
The Movement Clinic is an independent publication by Timekeeper PH. It is not affiliated with, endorsed by, or connected to Tudor or the Rolex Group. This tool is a triage aid, not a diagnosis — always confirm with a qualified watchmaker before acting on anything it shows you.