Miyota Caliber 9100

Miyota Caliber 9100

Miyota Caliber 9100

Brand Miyota (Citizen)
Caliber Number 9100
Movement Type Automatic
Diameter 13 1/2”’ (30.20mm)
Height 5.52mm
Jewels 26
Vibrations Per Hour
28,800 bph
Anti-Shock System Parashock
Power Reserve
40 hours
Winding Direction
Uni-directional (clockwise)
Hand Windable?
Yes
Hacking? Yes
Lift Angle 51 degrees
Stem 065-A05 (tap 10)
Plastic Movement Holder 500-002
Dial Screws 924-752
Hand Sizes
1.52mm / 1.0mm / 0.17mm
Functions Hours, minutes, central sweep seconds, 24 hour subdial, day subdial, month subdial, date window, power reserve indicator
Country of Manufacture Japan
Known Models Detomaso Forza XXL, TW Steel CEO Tech, too many to list (Add yours in the comments below…)

The Miyota caliber 9100 is from the 9100 family with other calibers based off of this one.

Accuracy

Miyota claims that the caliber 9100 offers accuracy of -10 ~ +30 seconds per day. This is measured within 10-60 minutes from a full wind via the crown. To fully wind the movement, turn the crown 40 times. The winding direction of the rotor is counterclockwise.

Miyota 9100 Family

  • 9100 – Hours, minutes, central sweep seconds, 24 hour subdial at 6:00, day of the week subdial at 9:00, month subdial at 3:00 (set with the pusher at 2:00), date window at 5:00, power reserve indicator at 12:00
  • 9110 – Hours, minutes, central sweep seconds, 24 hour subdial at 6:00, day of the week subdial at 9:00, date window at 3:00, power reserve indicator at 12:00
  • 9120 – Hours, minutes, central sweep seconds, 24 hour subdial at 6:00, day of the week subdial at 9:00, month subdial at 3:00 (set with the pusher at 2:00), date window at 5:00
  • 9122 – Hours, minutes, central sweep seconds, day of the week subdial at 9:00, month subdial at 3:00 (set with the pusher at 2:00), date window at 6:00
  • 9130 – Hours, minutes, central sweep seconds, date window at 6:00, power reserve indicator at 12:00
  • 9132 – Hours, minutes, central sweep seconds, 24 hour subdial at 6:00, date window at 3:00, power reserve indicator at 12:00

Replacement Prices

Replacement prices were found online for $136.95.

Examples of watches with caliber 9100

The photos in this listing are of a caliber 9100 found in this Detomaso Forza XXL Blackout. Some other watches with this movement:

Additional Resources

Share your experience with the Miyota caliber 9100 with the community below…

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Abu Galib
Abu Galib
1 year ago

so which economy range claiber is proving to be most precise?

Vincent
Vincent
1 year ago

My 9100 is by far the most accurate in my collection. Less than 2s per day.

Vincent
Vincent
1 year ago
Reply to  Vincent

And I got seikos, Swiss 2824, Orient, seagulls.

cristian
cristian
1 year ago
Reply to  Vincent

that can simply mean that the one with 9100 is the most calibrated

T
T
1 year ago
Reply to  Vincent

What watch do you have with this movment

Jack Wright
Jack Wright
1 year ago

I have 2 Android/Aragon watches with the Miyota 9100 movement. And I also have an accuracy of 2 secs per day, I take them off at nighttime leave dial up. Had them both for 7 years.

Vince Lewis
Vince Lewis
11 months ago
Reply to  Jack Wright

That’s nice to know Jack considering I’ve just bought an Aragon red dial. My Orient Mako III was gaining 1 sec/4 hours but made a compass needle go haywire, have just degaussed it so hopefully, no adjustment needed. I hope the Aragon has same accuracy as yours.

Wayne Smoody
Wayne Smoody
11 months ago
Reply to  Vince Lewis

What is the meaning of “degaussed it” anyway? Thx

Paul Munoz
Paul Munoz
3 hours ago
Reply to  Wayne Smoody

it means to demagnetize it is something that those of us from the 80s and early ninety’s also had to do to our 250 lb crt TV’s when color got messed up from us kids sticking magnets to the TVs to make rainbows PS my dad was pissed at me but luckily he had a friend that had a degausser for TV’s and promptly whooped my ass and then fixed his tv i never did… Read more »

Vince Lewis
Vince Lewis
11 months ago

I have a Miyota cal 9100 in my Pierre Petit and it kept good time for about 6 months but then started gaining. Also, the rotor doesn’t wind up the movement anymore, I can only do it on the crown? The watch sometimes unwinds all power from the mainspring when I pull the crown out? So it needs a service! So some peculiar anomalies present with the movement in my Pierre Petit watch. I’ve just… Read more »

Luke
Luke
9 months ago

Just bought a Bulova 96C142 with the Miyota 9110. The accuracy is impressive for a watch that costs under €500 and comes with power reserve indicator, weekday and date display. In the 4 days I’ve been timing it, it’s only gained 5 seconds compared to the online atomic time reference (I use time.is). I found out that mine runs -15s/d slow if the power reserve is extremely low (less than 5 hours). With sufficient power… Read more »

Luke
Luke
9 months ago
Reply to  Caliber Corner

Welcome, I also submitted some pics but they don’t seem to have been accepted yet?

Jon Hutto
Jon Hutto
7 months ago

I got a Villandry ACIER NOIR ET BLANC 85089_3A_F using the Miyota 9122. First couple weeks it was off by about +6 seconds a day. Since then it settled down to about 2 seconds a week. I guess there was a break-in period.. Only negative is I can sometimes feel the wheel spin.

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