Seiko 7T42 Movement Details

Seiko caliber 7T42 is an analog quartz watch movement. Production started around 1988.
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Sub-brands: SQ 100, Sports 150
Battery:SR927W / 395 (Silver oxide)
Accuracy:±15 seconds/month
Day / date?Date only
GMT / world time?No
Rate:32,768 Hz
Number of jewels:0
Size / diameter:27.0mm
PDF guides: Technical guide : 7T32B & 7T42B
Battery replacement guide
Related movements: 5T52 7T32 7T52 7T59 7T62 7T72 7T82 7T92

Part Codes

Date wheel code: 878527 (black on white)
Screw codes: 022230, 022459

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