Seiko M158 Movement Details

Seiko calibre M158 is a digital watch movement. Production was in the 1970s.
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Battery:SR1130W / 389 (Silver oxide)
Accuracy:±10 seconds/month
GMT / world time?Yes
Chronograph?No
Rate:32,768 Hz
Development division:Suwa (Nagano Prefecture, Japan)
Related movements: M154 M159