Seiko 1231 Movement Details

Seiko caliber 1231 is an analog quartz watch movement.
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Sub-brands: Lassale
Battery:SR616SW / 321 (Silver oxide)
Accuracy:±15 seconds/month
Day / date?No
GMT / world time?No
Rate:32,768 Hz
Number of jewels:2
Size / diameter:15.1mm
Development division:Daini (Kameido, Tokyo, Japan)
Notes:Used in ladies watches. Has a battery life indicator function. The same as cal. 1230 but with a seconds hand.
PDF guides: Technical guide : 1231A
Related movements: 1221 1230 1271

Part Codes

Stem code: 351117
Screw codes: 012490, 012792, 012796