Seiko 9642 Movement Details

Seiko caliber 9642 is a high grade analog quartz watch movement produced in the 1980s.

Sub-brands: Seagull, King Quartz, Grand Quartz
Battery:SR920SW / 371 (Silver oxide)
Accuracy:±20 seconds/year
Day / date?Date only
GMT / world time?No
Chronograph?No
Hacking?Yes
Number of jewels:6
Development division:Daini (Kameido, Tokyo),Suwa (Nagano)
Notes:Twin quartz for greater accuracy. The same as cal. 9641 but with date display.
Related movements: 9641