Seiko 6R38 Movement Details

Seiko caliber 6R38 is an automatic (with hand winding) watch movement. Production started around 2022.
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Sub-brands: Presage
Power reserve:70 hours
Accuracy:+25/-15 seconds/day (Seiko "C" standard)
Day / date?No
GMT / world time?No
Rate:21,600 bph
Number of jewels:24
Notes:The same as cal. 6R31 but partially skeletonized, so the balance wheel is visible from the dial side (which Seiko calls "open heart").
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Related movements: 6R31 6R35