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This is a genuine TMI/Seiko VX10 movement coil block, made in Japan, designed for the VX10 quartz caliber. It serves as the core drive component, converting electrical pulses from the circuit board into magnetic force to drive the stepper motor for hour and minute hand timekeeping. This product is brand new and original, intended for servicing and repair of VX10 movements.
Brand：TMI / Seiko Instruments Inc. (by S. Epson)
Compatible Movement：VX10 / VX10A quartz caliber
Part Name：Coil Block
Origin：Made in Japan
Quality：Genuine original, brand new
Function：Converts electrical pulses to magnetic force to drive stepper motor
1. Is this coil block an original TMI/Seiko genuine part?
Yes. It is an original TMI factory part, made in Japan.
2. Which movements is this coil block compatible with?
It fits the TMI/Seiko VX10 series quartz movements (including VX10A variants). This is a 2-hand, no-date movement measuring 5½×6¾ ligne (13.00×15.15mm), using a 317 battery. This coil does not fit VX11 (3-hand) or VX12 (with date) models.
3. What symptoms indicate coil block damage?
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 VX10 offers accuracy of ±20 seconds/month—coil failure directly impacts performance. Timely replacement is recommended.
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