Seiko H558 Movement Details

Seiko caliber H558 is an analog + digital ("ana-digi") watch movement. Production started around 1982 and production finished in 1990.
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Battery:SR927W / 395 (Silver oxide)
Accuracy:±10 seconds/month
Day / date?Day + date
GMT / world time?Yes
Rate:32,768 Hz
Number of jewels:3
Size / diameter:28.0mm
Development division:Suwa (Nagano Prefecture, Japan)
Notes:Has an alarm and a battery life indicator function where the digits in the display start flashing when the battery is running low.
PDF guides: Technical guide : H558A
Related movements: H556 H557 H851

Part Codes

Stem code: 372655 (movement side), 373640 (crown side)


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