Seiko 3863 Movement Details

Seiko caliber 3863 is an analog quartz watch movement produced from around 1973.

Sub-brands: QR, 3003
Battery:SR44SW / 303 (Silver oxide)
Accuracy:±20 seconds/month
Day / date?Day + date
GMT / world time?No
Chronograph?No
Rate:16,384 Hz
Size / diameter:25.6mm
Height:5.3mm
Development division:Suwa (Nagano)
Notes:The same as cal. 3862 but with day display (as well as date). It's also a less refined (and therefore more affordable) version of cal. 3823.
PDF guides: Technical guide for 3819A & 3863A
Related movements: 3819 3823 3862 3883

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