Credor Caliber 7771

Brand	Credor
Manufacturer	Seiko
Caliber Number	7771, 7771A
Movement Type	Quartz, battery-powered
Jewel Count	6
Frequency	32,768 Hz
Battery Cell	SR916SW / 373
Claimed Batt Life	3 years
Accuracy Rating	+/- 15 seconds/month
Trimmer/Regulator?	Yes
Hand Count	3
Functions	Central hours; central minutes; central seconds
Hacking Seconds?	Yes
Country of Manufacture	Made in Japan
Known Models	(Add your watch to the comments below…)

The Credor caliber 7771 is a vintage 3-hander quartz movement from circa 1980s. It has been discontinued and is no longer produced.

This caliber is part of the 77 family of Credor movements and is based on the calibre 7770. The main difference is that the 7770 is a 2-hander without seconds and the 7771 has a central seconds hand.

Credor is a luxury line of watches that was launched by Seiko in 1974.

Additional technical details:

• Movement current consumption: 1.1 uA
• Circuit block current: 0.6 uA
• Coil resistance: 3.0-3.8

Additional Resources:

• Credor official site