Tudor Caliber Mt5612

Tudor Caliber MT5612

Tudor Caliber Mt5612

Manufacturer Tudor
Caliber Number MT5612, MT-5612
In-House? Yes
COSC?
Yes
Diameter 31.8mm
Thickness 6.5mm
Vibrations Per Hour 28,800 bph (4 Hz)
Power Reserve 70 hours
Jewels 26
Balance Spring Silicon, non-magnetic
Oscillator Variable inertia balance, micro-adjustment by screw
Hacking? Yes
Functions Hours, minutes, central seconds, date
Country of Manufacture Switzerland
Known Models
Pelagos (M25600TB-0001, M25600TN-0001, M25610TNL-0001)

The Tudor caliber MT5612 automatic caliber is an in-house Certified Chronometer (COSC) movement. It is equipped with a bidirectional rotor system and variable inertia balance, micro-adjustment by screw. This caliber also features a non-magnetic silicon balance spring. This movement was introduced in 2015.

The Tudor caliber MT5602 (found in the Heritage Black Bay) is similar but has one less jewel and no date complication. Both are 28,800 vph and 70 hr power reserve.

Tudor Mt5612

From Tudor:

“The Pelagos is powered with the new TUDOR Manufacture Calibre MT5612, providing impressive autonomy. Its power reserve of approximately 70 hours means that its wearer can, for example, take off the watch on Friday evening and put it on again on Monday morning without having to wind it. In addition to the hour, minute and central second functions, it provides an instant date display visible through an aperture positioned at 3 o’clock. Beating to a frequency of 28,800 beats/hour or 4Hz, this movement is regulated by a variable inertia oscillator with silicon balance spring, held in place by a traversing bridge fixed at both sides to improve resistance to shocks and vibrations. Its self-winding system is bidirectional. The movement is certified by the Swiss Official Chronometer Testing Institute (COSC).”

Pelagos ETA 2824-2 (V1) vs MT5612 (V2)

The first edition of the Pelagos has an ETA caliber 2824-2 movement. These models can be found on the used market for a lower price than the updated models with the in-house caliber MT5612 featured here. The easiest way to tell the difference between the two watches is that the ETA (V1) model only has two lines of text on the dial. This is sometimes referred to by Tudor enthusiasts as the two liner. The in-house model has five lines of text and a different caseback to accommodate the new movement.

V1 ETA 2824-2 Dial Text

ROTOR SELF-WINDING
500m : 1640ft

V2 Tudor MT5612 Dial Text

PELAGOS
CHRONOMETER
OFFICIALLY CERTIFIED
ROTOR SELF-WINDING
500m : 1640ft

Examples of watches with this movement:

Tudor Pelagos M25600tb 0001 Mt5612 Tudor Pelagos M25600tn 0001 Mt5612 Tudor Pelagos M25610tnl 0001 Mt5612

Additional Resources

  • Tudor official movement page here
  • Tudor Pelagos/MT5612 user manual here
  • Shop Tudor watches here

Please share your experience and thoughts on the caliber MT5612 in the comments below…

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Edward
Edward
4 years ago

I must say this movement is one of my best performing movements so far i have a lot to compare to the omega 2500d 2428-2 eta 2893-2 eta but this pelagos is accurate to seconds per week 1.5 not a day but per week and with a 70 hour power reserve you don’t need to be very active and that suits my retired lifestyle just fine

Tom
Tom
4 years ago

The movement is also used in the Tudor Black bay S&G

Andy Matthews
Andy Matthews
4 years ago

Hi, I have had my Pelagos since November 2018 and have been keeping track of its timekeeping with the Watch Tracker app on my iphone. So far, after measuring for 109 days, it has been running at a rate of -0.2 seconds per day.

MARK WOLFSON
MARK WOLFSON
4 years ago
Reply to  Andy Matthews

I am on a waiting list for a Tudor GMT, but the Pelagos seems like a better quality watch! Humm….

Jay
Jay
9 months ago
Reply to  MARK WOLFSON

Pelagos is a GREAT watch. worth considering unless you’re dead set on a GMT

bobby bleu
bobby bleu
4 years ago

I have this unit in my Brand new Breitling Super Ocean II Heritage. The watch is Black, Steel and Red Gold and is stunning, but not crazy about the supposed accuracy. not running to COS spec in real time of on a Wish Timegrapher.

Chris
Chris
3 years ago
Reply to  bobby bleu

I have the same issue with a black bay steel. Same movement and its falling out of spec on the slow side. Averaging 6-7 sec loss per day. Doesn’t seem to be any resting position I put it in where it gains time, just loses time. On the fence about sending it in for regulation since I don’t like the idea of mailing it in and hoping for hr best.

bobby bleu
bobby bleu
3 years ago
Reply to  Chris

Since I made my comment my SOH II has settled in beautifully and is now running about +3/4 and Better if I rest it tilted back on itself, so I have no complaints at all now.

Josh
Josh
3 years ago
Reply to  bobby bleu

How long did it take to settle?

bobby bleu
bobby bleu
3 years ago
Reply to  Josh

Really don’t know because I didn’t obsess over it just checked it again after about five months and it was running great as a matter of fact I just checked it against the atomic clock and its running 22 seconds fast and the last time I set it was on December 1st, I kid you not. I have noticed that for awhile it was running about 15 seconds slow so I guess position is a factor. I have a Pelagos with the same movement its running very well at about +3 a day more than acceptable.

Áron Biacsi Schön
Áron Biacsi Schön
3 years ago

Really one of the best non complicated movement

20191030_144223.jpg
Frank
Frank
1 year ago

Beautiful watch…

3ABE924A-7036-4E3C-83E4-BEEDD3EE21A2.jpeg
Andrew
Andrew
11 months ago
Reply to  Frank

I have the leather strap version, beautiful as well, I receive a lot of compliments on this watch.

Andy
Andy
7 months ago
Reply to  Andrew

Same here, really lovely watch.

IMG_20221014_183147.jpg
trackback
New Watch Alert: 7/24/2020 - The Truth About Watches
3 years ago

[…] fruit of Breitling’s co-production with Tudor, based on the Rolex sub-brand’s Caliber MT5612. It’s regulated by a variable inertia oscillator (a la Rolex) with a silicon balance spring, […]

Harry Balskitch
Harry Balskitch
3 years ago

How about mine. A 1:1 exact copy of a 5 liner (homage) Yes all Ti, except for the buckle, and with ceramic pinch points, but routed out (machined) for a ETA 2824-2 clone that came with it… I have since replaced the ETA 2824-2 clone with a Genuine ETA 2824-2 TOP grade shipped directly from Switzerland, which was the whole idea I had in mind from the beginning. I prefer to work on my watches (ETA 2824-2, 2893-2, 7750, 7751, 7753, 7754) using my digital Weishi timegrapher. I put them in beat, regulate/adjust, oil, de-magnitize (if necessary) them. I wouldn’t… Read more »

James
James
1 year ago
James
James
1 year ago

What

CHARLES CUTLER
CHARLES CUTLER
3 years ago

bought my Pelagos with Mt5612 3 yrs ago, it ran 3-5 sec slow per day. Ive been told to give it some time…its still the same, it even goes down to 8 sec / day crown down with a consistent 245 amplitude. The Pelagos is my first expensive watch since I acquired my grandfather’s 1978 tudor snowflake, which btw ran at COSC specs

trackback
Tudor Pelagos Blue Review: a daily beater - FIFTH WRIST
2 years ago

[…] MT5612 in-house automatic movement is precise and robust. I have no issue with the Tudor Pelagos Blue except maybe the thickness under […]

doug
doug
2 years ago

this movement is in the Tudor Black Bay P01 (released at BaselWorld in 2019)

Robert
Robert
1 year ago

I wear my Tudor Pelagos LHD (late 2020) almost 24/7 and 1,5 years later the caliber is still running at +0.5s (winter) to +1.3s (summer). The MT5612-LHD is a great one.

Frank
Frank
1 year ago

Tudor Heritage Black Bay S&G M79733N – 0008 is the real Rolex Submariner of today. It is high quality, expensive, usable but not insultingly overpriced either. It has in house Tudor movement TM 5612 which is similar to Rolex 3255. Rolex is what poor people think rich people wear.

Frank
Frank
1 year ago
Reply to  Frank

It feels warmer, more formal, more luxurious, and that little bit more timeless.

8567FC0A-9C1D-4209-B2BA-9BED345EC033.jpeg
Joel
Joel
1 year ago

Hi,
I bought my Pelagos on April 2017. During 5 years and 2 months, no issues. I wore it every day.
Last week, it stopped – without any shock!
Return to Tudor’s customer service.
Today, the customer service calls me : the movement is dead ! They have to replace it. No more details except that it is still under warranty (thanks to Tudor)!

Now, I have to wait for 5 weeks and I won’t be able to wear my Pelogos during my coming holidays.

I will try to get more details when I get it back.

Joel
Joel
1 year ago
Reply to  Joel

Hi,
My pelagos comes back. They changed the caliber (only one week).
Now it is perfect.

DAN
DAN
1 year ago
Reply to  Joel

They changed the entire movement, not just the parts? Did they say what what wrong with it? Doesn’t seem necessary to change an entire movement like a quartz.

Joel
Joel
1 year ago
Reply to  DAN

They told me that they have changed the entire movement.

Manny
Manny
1 year ago
Reply to  DAN

That’s common practice at Tudor. They change the whole movement with a refurb-Factory new one. Saves them time.
The exchanged movement is then send to their watchmakers and checked & repaired properly.

Gary
Gary
10 months ago

Amazing website! Thanks for the infos.

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