| Manufacturer | Seiko Time Corp. |
| Caliber Number | 8J42 |
| Type | Quartz |
| Jewels | 5 / 7 |
| Vibrations Per Hour | 32,768Hz |
| Accuracy | +/- 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:
High quality image needed to complete this caliber listing. Please submit one here.
network of watch sites
Trending Comments
ALTO Caliber A01
One of the coolest looking movements I've seen in a long time!
ALTO Caliber A01
What's with these prices. It's 20k and has the same regulating system in my $500…
Sunon Caliber PE11
Sunon is a part of GUANGZHOU Pearl Time Group, PE11 is the only repairable movement…
ETA Caliber 2824-2
Hi Craig, that would be the hour wheel. Tech sheets were added to the caliber…
ALTO Caliber A01
Im usually not into micro-rotor movements but this one is nice. I just wonder if…
Active Caliber Listings
More like saying, my Ferrari-which I had to get their permission to buy-has to be…
>Each beat is a hit at the positive or negative maximum Does this definition mean…
One beat is one tick or tock. Each beat is a hit at the positive…
Buy a 1969 King Seiko 5626-7000. Do so at your own peril because you'll discover…
are ETA 2824-2 dial are compatible?