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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

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Is the Miyota Caliber 9100 any good? Share your opinions, experiences and watches below... Keep comments respectful and follow our community guidelines.

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Abu Galib
Abu Galib

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

Vincent
Vincent

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

Vincent
Vincent

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

cristian
cristian

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

T
T

What watch do you have with this movment

Jack Wright
Jack Wright

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

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

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

Vince Lewis
Vince Lewis

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 bought an Aragon 9100 online, hoping it will be fine, love all the complications in a divers watch plus got to love that power-reserve.