Seiko 1428 Movement Details

Seiko caliber 1428 is an analog quartz watch movement.
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Battery:SR621SW / 364 (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 x 13.0mm
Development division:Daini (Kameido, Tokyo, Japan)
Notes:Has a battery life indicator function where the seconds hand moves in two-second intervals when the battery is running low. The same as cal. 1421 but with a small seconds sub-dial.
PDF guides: Technical guide : 1421A & 1428A
Parts list : 1428A
Related movements: 1400 1421

Part Codes

Stem code: 351144
Screw codes: 012155 (dial screw), 012170, 012171, 012186