Seiko 7N42 Movement Details

Seiko caliber 7N42 is an analog quartz watch movement.
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Sub-brands: The Great Blue
Battery:SR920SW / 371 (Silver oxide)
Accuracy:±15 seconds/month
Day / date?Date only
GMT / world time?No
Rate:32,768 Hz
Number of jewels:0 or 1
Size / diameter:23.5mm x 21.9mm
Notes:The same as cal. 7N43 but without day display (date only). There are 7N42A and 7N42C variants of this movement – 7N42C is about 0.1 mm thinner and has one jewel, whereas 7N42A has no jewels.
PDF guides: Technical guide : 7N22A, 7N29A, 7N33A, 7N42A & 7N43A
Technical guide : 7N42C, 7N43C
Related movements: 7N22 7N29 7N33 7N43 7N47 7N48

Part Codes

Stem code: 351892 (tap 11)
Screw codes: 022410