Seiko 8T63 Movement Details

Seiko caliber 8T63 is an analog quartz watch movement.
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Sub-brands: Spirit
Battery:SR936SW / 394 (Silver oxide)
Accuracy:±15 seconds/month
Day / date?Date only
GMT / world time?No
Rate:32,768 Hz
Number of jewels:0
Size / diameter:29.0mm
Notes:This is a "meca-quartz" watch in that it needs a battery and is regulated by a quartz oscillator, but it has a mechanical chronograph function. As a result, the chronograph seconds hand has a smooth, sweep movement, and snaps back immediately when reset. This movement is similar to cal. 8T67 but with a 24-hour hand instead of a stopwatch hour hand.
PDF guides: Technical guide : 8T63A
Related movements: 8T67 8T68

Part Codes

Stem code: 351177 (tap 10)
Screw codes: 012354, 016121