Seiko 7918 Movement Details

Seiko caliber 7918 is an analog quartz watch movement. Production was in the 1980s.
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Battery:SR41SW / 384 (Silver oxide)
Accuracy:±15 seconds/month
Day / date?No
GMT / world time?No
Chronograph?No
Rate:32,768 Hz
Number of jewels:7
Size / diameter:18.0mm
Height:3.6mm
Stem code: 354791
Screw codes: 022282, 022423, 022424, 022465, 022468, 022764 (dial screw)
Development division:Suwa (Nagano)
Notes:Used in ladies watches for the visually impaired, featuring a flip up cover.
PDF guides: Technical guide : 7518A & 7918A
Parts list : 7918A
Related movements: 7518 7903