Citizen Caliber 0950

Brand	Citizen Watch Co., Ltd.
Manufacturer	Miyota (owned by Citizen)
Caliber Number	0950
Movement Type	Automatic, self-winding mechanical
Lignes	13.5”’
Diameter	30.2mm
Height	5.5mm (unconfirmed)
Jewel Count	24
Beat Rate	28,800 vph, 4 Hz
Lift Angle	51 degrees
Power Reserve	~50 hours
Rotor Style	Ball-bearing
Rotor Winding Direction	Unidirectional (clockwise)
Hand-Windable?	Yes
Anti-Shock Device	Parashock
Hand Count	3
Functions	Central hours; central minutes; central sweeping seconds; date at 3:00
Hacking Seconds?	Yes
Quickset Date	Yes
Country of Manufacture	Made in Japan
Known Models	Citizen Series8 870, Citizen Series8 830,  (Add your watch to the comments below…)

Citizen caliber 0950 (not 09S0) is an automatic movement found in the Citizen Series 8 model 870. It is a 3-hander with a date at 3:00, made in japan with 24 jewels and a frequency of 4 Hz (28,800 beats per hour).

In Citizen’s own words:

“Developed entirely in-house, the new mechanical movement embodies our spirit of never-ending challenge. You can watch the movement in action through the see-through case back. It’s your private window into the beauty of precise timekeeping.” -Citizen Watch

Accuracy Rating:

Citizen claims that watches powered by the 0950 can expect an average accuracy rating of -5 ~ +10 seconds per day in normal operating conditions.

Examples of watches with this caliber:

Additional Resources:

• Official Citizen instruction manual (pdf)