Seiko 4R72 Movement Details

Seiko caliber 4R72 is an automatic (with hand winding) watch movement.
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Sub-brands: Presage
Power reserve:41 hours
Accuracy:+45/-35 seconds/day
Day / date?No
GMT / world time?No
Chronograph?No
Hacking?Yes
Rate:21,600 bph
Number of jewels:24
Lift angle:53º
Size / diameter:27.0mm
Notes:Designed for use in skeleton dial watches.
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Related movements: 4R38 4R71