Seiko 9940 Movement Details

Seiko caliber 9940 is a high grade analog quartz watch movement produced in the 1980s.
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Sub-brands: Grand Quartz
Battery:SR927SW / 395 (Silver oxide)
Accuracy:±10 seconds/year
Day / date?No
GMT / world time?No
Number of jewels:5
Development division:Suwa (Nagano)
Notes:Twin quartz for greater accuracy. The same as cal. 9942 but without date display.
Related movements: 9942 9943