Cc Bg 1920 1280
Seiko Caliber 8J42

Seiko Caliber 8J42

Manufacturer Seiko Time Corp.
Caliber Number 8J42
Type Quartz
5 / 7
Vibrations Per Hour
+/- 10 secs/year
Battery Cell
SR916SW (373)
Functions Central hours, central minutes, central seconds, date at 3:00
Country of Manufacture Japan
Known Models
Seiko Dolce (Add your watch to the comments below…)

The Seiko caliber 8J42 is a 3-hand thermo-compensated high-accuracy quartz (HAQ) movement made in Japan.

Some of the topics covered in this caliber listing:

8J42 VS 8J41

There is a similar caliber 8J41. The main difference between these two movements is that the 8J42 has a date at 3:00 and the 8J41 does not have a calendar complication.

8J42 Battery Life

The Seiko caliber 8J42 is said to run up to 3 years on a fresh battery.

8J42 Accuracy

Seiko officially claims that the accuracy of the caliber 8J42 averages at +/- 10 seconds per year.

Instruction Manual

Additional Resources:

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