Grand Seiko Spring Drive Automatic
Hybrid mechanical-quartz automatic with 9R65 Spring Drive, 30+ jewels, ±1 sec/day accuracy. Technically automatic per regulation system; HTS 9102.21.90 over 17 jewels. Revolutionizes timekeeping.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pure quartz regulation without mechanical jewels
True quartz excludes from mechanical chapter subheadings.
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Import Tips & Compliance
• Spring Drive explanation/tech specs prevent quartz misclassification
• Zaratsu polishing inspection; premium finish justifies value
• Declare as mechanical despite quartz regulator
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