Seiko S234 Movement Details

Seiko caliber S234 is a digital watch movement produced in the 1980s.
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Sub-brands: Pulse Meter
Battery:CR2016 / (Lithium)
Accuracy:±15 seconds/month
GMT / world time?No
Rate:32,768 Hz
Size / diameter:28.0mm x 27.8mm
Development division:Daini (Kameido, Tokyo)
Notes:Has a pulse sensor to measure pulse rate, and a "pace keeper" metronome. Also usable with external probes for continuous pulse measurement.
PDF guides: Technical guide for S234A
Battery reset guide
Related movements: S229