Seiko 5Y23 Movement Details

Seiko caliber 5Y23 is an analog quartz watch movement.
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Sub-brands: SQ
Battery:SR920SW / 371 (Silver oxide)
Accuracy:±20 seconds/month
Day / date?Day + date
GMT / world time?No
Rate:32,768 Hz
Number of jewels:1
Size / diameter:23.3mm (19.0mm x 21.0mm)
Development division:Daini (Kameido, Tokyo, Japan)
Notes:The same as cal. 5Y22 but with day display (as well as date).
PDF guides: Technical guide : 5Y22A, 5Y23A, 5Y30A, 5Y31A, 5Y32A & 5Y39A
Related movements: 5Y22 5Y30 5Y31 5Y32 5Y39

Part Codes

Stem code: 351546 (tap 13), 351670 (tap 11)
Date wheel code: 801722 (black on white)
Screw codes: 022247