Miyota 9075 Bulova Gmt

Miyota Caliber 9075

Miyota 9075 Bulova Gmt

Manufacturer Miyota
Caliber Number 9075
Movement Type Automatic, self-winding mechanical
Lignes 11.5”’
Diameter
26mm
Height 4.92mm
Jewels 24
Beat Rate
28,800 vph, 4Hz
Lift Angle
51 degrees
Power Reserve
~42 hours
Anti-Shock System Parashock
Winding Direction
Uni-directional (clockwise)
Hand Windable?
Yes
Hands Count
4
Hand Sizes
2mm / 1.5mm / 1mm / .17mm
Functions Central hours; central minutes; central sweeping seconds; central GMT hand; date at 3:00
Hacking Seconds? Yes
Country of Manufacture Japan
Known Models LIP Nautic Ski GMT, Jack Mason Strat-o-timer GMT, BOLDR Odyssey 44 Freediver GMT, Bulova Classic Wilton GMT (Ref: 96B385, 96B387, 97B210) (Add your watch to the comments below…)

The Miyota caliber 9075 is an affordable automatic “true” GMT movement with 24 jewels and a hi-beat rate of 28,800 bph. It is a member of the 9100 family (9 series) of Miyota calibers that the manufacturer categorizes as “Premium Automatic” movements.

True / Travel GMT:

Setting the local time and GMT on the 9075 is similar to luxury multi-timezone watches such as the popular Rolex GMT-Master II (cal. 3185). The watch community often refers to this type of movement as a true GMT or traveller GMT because the main hour hand is independently adjustable (aka jumping hour hand) for easily changing the current time while crossing (er… jumping) time zones.

As BOLDR puts it:

“Whilst crossing time zones, simply adjust the hour hand independently from the GMT and minute hand and the date will follow, ensuring precision timekeeping anywhere in the world. Stay in the zone, adventurers.” –source

How to set the time?

The crown on 9075 powered watches has 3 positions:

  • Position 0: Crown against the case (if the watch has a screw-down crown, this is the position the crown is in immediately after unscrewing the crown) – Manual-winding.
  • Position 1: Crown pulled out one click – Adjusts the hour hand (main hours), adjusts the date.
  • Position 2: Crown pulled out two clicks – Adjusts the time (main hours/minutes/GMT), hacked seconds.

Accuracy:

Miyota claims that the caliber 9075 offers accuracy of -10 ~ +30 seconds per day. This is measured within 10-60 minutes from a full wind via the crown. Winding the crown 15-20 times will get the seconds hand to start moving. To fully wind the movement, turn the crown ~40 times. You will get better accuracy results from a full wind.

Jewel Count:

There was a previous mix up on jewel count. This caliber has 24 jewels as does its base caliber the 9015. You may see this movement listed with 26 jewels, still trying to find the source of that. As of 1/23, Miyota still does not have a listing for this watch and no official documentation is available yet. Therefore, an actual watch was purchased by Caliber Corner for the sole reason of confirming the jewel count and it remains at 24. More photos/video soon.

Miyota Caliber 9075 Macro

Replacement Prices:

At the time of this post, replacement prices for the Miyota 9075 are unavailable. This will be updated when there is more information.

Update 3/2024: There still does not appear to be a watch parts seller offering the 9075. It seems the only way to get them is still the wholesale route (ie: brands using this movement, buying in bulk from Miyota). Due to these movements not hitting the market individually, that also means a lack of parts for modding (really, this just means a lack of GMT hands being marketed as “Miyota 9075 GMT hands” –

Examples of watches with this movement:

One of the earliest watches publicized to be carrying the calibre 9075 was the Bulova Classic Wilton GMT, introduced on July 15, 2022. It makes sense that Bulova be the first to have such an important addition to the Miyota lineup since Bulova and Miyota are both owned by the Japan based conglomerate Citizen Watch Co. Ltd.

But even before the Bulova was releases, Twitter user @BelleMecanique_ posted an image of the LIP Nautic Ski Auto GMT 41 as far back as October 21, 2021. Perhaps LIP was the first. The interesting question is, did LIP request such a movement from Miyota or did Miyota approach them with the offering first?

https://twitter.com/BelleMecanique_/status/1451636711335804930

Still, at the time of this post, there aren’t many brands using the Miyota 9075. It is still a very early movement and is not even publicized on Miyota’s official site yet. To give you a better idea of the availability, watches with this movement are in pre-order stages with delivery estimates as far off as March 2023 (Jack Mason Strat-o-timer GMT). As for pricing, the few 9075 powered timepieces that are on the market have pre-order pricing at around $899 USD – $1,050 USD range.

Does Seiko have a similar movement?

The closest thing Seiko has to Miyota’s 9075 may be the caliber NH34A. It is also an affordable (more affordable actually) automatic GMT movement. The main difference between the Miyota and Seiko GMTs is that the Miyota is a true/traveller’s GMT (the main hour hand is set independently) and the Seiko is a caller/office GMT (the GMT/24 hour hand is set independently).

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List of Miyota Watch Movements Watch Movement | Caliber Corner
1 year ago

[…] 9075 – “Traveler” GMT […]

Gianluca
Gianluca
1 year ago

26 or 24 jewels?

H. Schmelzer
H. Schmelzer
1 year ago
Reply to  calibercorner

@CC, I looked it up with Miyota-site, it’s 26 jewels indeed. Why are you deleting my contribution here?

Raj
Raj
1 year ago

Wow Miyota is really is becoming the go to Swiss alternative. This is an exciting gmt movement and I really can’t wait to get a 9075 watch in my collection. Hopefully more will be for sale soon. I like the Bulova but want a black dial dress gmt.

Mynextwatch
Mynextwatch
1 year ago
Reply to  Raj

Bulova has a black one but it’s not available in USA. I don’t now why watch brands can’t just make everything available in every country.

Mk
Mk
1 month ago
Reply to  Raj

I’m not sure it’s dress, but take a look at Nezumi Aviera AA2.102: https://www.nezumistudios.com/product/aviera-gmt-ref-aa2-102/

Eric
Eric
6 days ago
Reply to  Mk

Not dress but a good looking watch nonetheless. Very clean look without a date complication. I imagine it will have a “ghost” position when using the crown (meant for setting the date). Miyota may have a no date option??

Courtney
Courtney
1 year ago

Gavox. Belgian micro brand has the longitude model with this movement. Great “glacial” dial. Very much like GS dials.

Andrew Pullens
Andrew Pullens
1 year ago

Jack Mason Strat-o-timer is using this movement.

H. Schmelzer
H. Schmelzer
1 year ago

26, I really think it’s 26

H. Schmelzer
H. Schmelzer
1 year ago

24, I looked it up with Miyota itself, it’s 24 jewels.

Bryan
Bryan
1 year ago

Opinions on how this stacks up against the Powermatic 80 based GMT’s?

R Arbelaez
R Arbelaez
1 year ago
Reply to  Bryan

Powermatic 80s have a longer reserve (80 hours), are 3Hz and are usually more precise due to being regulated by robots using a laser to cut the balance spring at the assembly line to regulate them. Also, because of this, they’re more impact resistant, as the lack of a regulation arm reduces the chance an impact will de-regulate your movement, but it also makes it harder to regulate them manually. I have 5 watches w/powermatic 80s, Mido, Certina, Tissot and all are within or very close to COSC ranges (only one GMT, the Mido, and it’s usually +3/+5 spd).

WathEnthuMan
WathEnthuMan
1 year ago

Zepplin Atlantic GMT also uses this movement. Compared to Seiko5 GMT, this movement seems more premium.

Alanfromvictoria
Alanfromvictoria
1 year ago

Also available in the Traska Venturer, which is a lovely watch now in my collection.

Yukonthorn Saengsanoh
Yukonthorn Saengsanoh
1 year ago

Where I can buy this movement (Miyota 9075) for DIY watch?

F.Lopez
F.Lopez
1 year ago

Bought the French Lip Nautic Auto GMT 41MM and she’s really pretty on my 7.5″ wrist. After a few days, running about +12 sec./day and true GMT function works flawlessly. Movement quotes “26 Rubis” through the see-through caseback, but sounds like there is some controversy there.

LipNauticGMT.jpg
LipNauticGMT2.jpg
Andreas
Andreas
1 year ago
Reply to  F.Lopez

How easily is the internal bezel rotated by accident, or does the upper crown for bezel rotation screw down?

F.Lopez
F.Lopez
1 year ago
Reply to  Andreas

It does not screw down…so it can rotate fairly easily. Not sure what that means from a waterproof standpoint.

Niko
Niko
1 year ago

Is it safe to set the date backwards using the jumping hour hand?

Mynextwatch
Mynextwatch
1 year ago
Reply to  Niko

Yes, GMTs like this use the jump hour to set the date frontwards and backwards.

Trapok
Trapok
1 year ago

Traska Venturer GMT uses also this movement.

John Smith
John Smith
1 year ago

The thickness listed here is incorrect, 3.8mm is for a 9015, the 9075 with its GMT complication is 5.12mm; that makes it nearly as chunky as the NH34A at 5.32mm, albeit the Miyota has a higher beat rate and is a true traveller GMT (the Seiko is an office GMT)

NKH
NKH
1 year ago

New to mechanical watches here… What do I do if my watch runs out of juice while it’s changing the date between 9pm – 3am? Can I just manually adjust the time forward and set the time?

Tim
Tim
1 year ago
Reply to  NKH

With all mechanical watches, you just wind it and set the time. I believe you’re thinking about setting the date if it’s too close to midnight, which can cause a problem for some movements. This watch is a true/traveler/flyer GMTs, so there’s no quickset date. You use the quickset hour to set the date. Also, there isn’t a time of day where you shouldn’t quickset the date. That doesn’t apply to true/traveler/flyer GMTs.

Jason G
Jason G
1 year ago

Updates for watches using it: Gavox Longitude; Marloe GMT; Traska Venturer; Zelos Mako GMT

R4acks
R4acks
1 year ago
Reply to  Jason G

Marloe has just launched a GMT with this movement. £699.

Daniel Martinez
Daniel Martinez
1 year ago

Traska Venturer GMT also claims to have this movement.

2sylbl
2sylbl
1 year ago

Zelos Mako GMT also has this movement.

crispy
crispy
1 year ago

Lorier will be transitioning their Hyperion GMTs from the Soprod C125 to the Miyota 9075; per some of their marketing emails, they are expecting their first batch of Miyota-based Hyperions to be made available later this summer.

Larry Ruble
Larry Ruble
1 year ago

Vaer just started using this movement in a more affordable GMT Watch.

Flumsi
Flumsi
11 months ago

This movement also drives the Marloe GMT

Matty
Matty
10 months ago

Smiths De Luxe Traveler very recently launched and uses this movement in black and white dial configurations. Received mine and it is keeping time well better than spec quoted. Thanks everyone.

Peter
Peter
9 months ago

Just purchased a Vaer Meridian GPS watch with a Miyota 9075 movement

Jesse
Jesse
7 months ago

Is there any anti-magnetic properties to this movement?

James
James
4 months ago
Reply to  Jesse

No, there are not, unfortunately; however, I haven’t had any such issues with my Strat-o-timer – it’s a fantastic, very accurate piece of kit.

manny
manny
2 months ago

what is the inside diameter of the hole for the GMT hand? And the rest of them?
cheers

Leo
Leo
1 month ago

I have a Hydra 3 by Lorier watches with the Miyota 9075. It consistently runs +4-6sec/day. It is an excellent all-around timepiece.

Dirk
Dirk
1 month ago

Moana Pacific Waterman GMT Bronze is using this movement.

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