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This is a genuine TMI/Seiko VC11 movement coil block, made in Japan, designed for the VC11 quartz caliber. It serves as the core drive component of the stepper motor, generating electromagnetic impulses to drive the stepper motor for hour, minute, and second hand timekeeping. This product is brand new and original, essential for restoring proper function when the original coil becomes damaged or fails.
Brand：TMI / Seiko Instruments Inc. (Hattori / Seiko / Shiojiri / Epson)
Compatible Movement：VC11 quartz caliber (and VC00/VC01/VC10 series)
Part Name：Coil Block
Origin：Made in Japan
Quality：Genuine original, brand new
Function：Generates electromagnetic impulses to drive stepper motor
1. Is this coil block an original Seiko genuine part?
Yes. It is an original TMI/Seiko factory part, made in Japan.
2. Which movements is this coil block compatible with?
It fits the TMI/Seiko VC11 series quartz movement (5½×6¾ ligne, 13.00×15.15mm). This is a 3-hand, no-date movement featuring hacking seconds, and can serve as a replacement for Seiko V401. The coil block is also compatible with VC00, VC01, and VC10 models. Verify the caliber marking on your movement main plate.
3. What happens if the coil block is damaged?
The coil block is the core drive component of the stepper motor. Common symptoms include: movement not running after battery replacement, noticeable time gain/loss, or intermittent stoppage. The VC11 uses a 379 (SR521SW) battery—coil failure directly impacts timekeeping. Timely replacement is recommended.
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