Seiko 7550 Movement Details

Seiko caliber 7550 is an analog quartz watch movement. Production was in the 1980s.
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Battery:SR43SW / 301 (Silver oxide)
Accuracy:±15 seconds/month
Day / date?No
GMT / world time?No
Rate:32,768 Hz
Number of jewels:5
Size / diameter:27.0mm
Development division:Suwa (Nagano Prefecture, Japan)
Notes:Used in "railway" pocket watches.
Related movements: 7559

Part Codes

Stem code: 354371, 354602