Miyota Caliber 9122

Manufacturer	Miyota
Caliber Number	9122
Base Caliber	Miyota 9100
Movement Type	Automatic, self-winding mechanical
Lignes	13.5”’
Diameter	30.2mm
Height	5.52mm
Jewel Count	26
Beat Rate	28,800 vph, 4 Hz
Lift Angle	51 degrees
Power Reserve	~40 hours
Rotor Style	Ball-bearing
Rotor Winding Direction	Unidirectional (clockwise)
Hand-Windable?	Yes
Anti-Shock Device	Parashock
Hand Count	5
Hand Sizes	1.52mm / 1mm / .17mm / .25mm
Functions	Central hours; central minutes; central sweeping seconds; date window at 6:00; day of the week subdial at 9:00; month subdial at 3:00
Hacking Seconds?	Yes
Country of Manufacture	Japan
Known Models	MAEN Brooklyn 36 Triple Calendar, Melbourne Watch Company Portsea, Kuoe Kyoto Royal Smith, Erroyl Regent Nero Reverse Panda Dial (Add your watch to the comments below…)

Miyota caliber 9122 uses the framework of Miyota’s 9 series of what they categorize as “premium automatic” watch movements. The cal. 9122 is made in Japan and has 26 jewels and a frequency of 4 Hz or 28,800 beats per hour.

Functionality:

The notable feature of watches with the calibre 9122 would be the calendar complications, including: date calendar at 6:00, a pointer style day of the week subdial at 9:00, and a pointer style month subdial at 3:00.

Accuracy Rating:

According to Miyota, the calibre 9122 has an average accuracy of between -10 and +30 seconds per day. This is in normal operating conditions.

Replacement Prices:

At the time of this caliber listing, replacement prices for the 9122 were found online in the range of $102 USD – $129.99 USD.

Additional Images:

Additional Resources:

• Official 9122 tech drawings (pdf)
• Official 91XX instructions manual (pdf)
• More Miyota watch movements