Family: 4R
The Seiko Instruments Inc. 4R38 is an automatic movement with no date complication. It operates at 21,600 bph with a power reserve of approximately 41 hours. The 12''' (27mm) diameter caliber belongs to Seiko's in-house 4R family. The movement remains in production and is used in various Seiko sports and dress watches.
TECHNICAL SPECIFICATIONS
Movement Type
Automatic
Display Type
Analog
FEATURES
Hacking SecondsHand Winding
More Seiko Instruments Inc. movements
QUICK FACTS
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