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
Chronograph?	Yes
Alarm?	Yes
Hacking?	Yes
Rate:	32,768 Hz
Number of jewels:	0
Size / diameter:	27.0mm
Height:	3.1mm
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