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This is a genuine MIYOTA GM00 winding stem (Part No. 065-543) for the GM00/GM10/GM15 movements, made in Japan, designed for ultra-slim quartz calibers. It serves as the critical mechanical component connecting the crown to the keyless works for time setting and manual winding functions. This product is brand new and original, featuring Tap 10 (0.90mm) specification, essential for servicing and repair of GM00 series movements.
Part Number：065-543 (also listed as 401 by some suppliers)
Compatible Movements：GM00 / GM10 / GM15 ultra-slim quartz calibers
Origin：Made in Japan
Quality：Genuine original, brand new
Thread Spec：Tap 10（0.90mm）
Alternative Version：065-545 (long thread version)
1. Is this winding stem an original MIYOTA genuine part?
Yes. It is an original MIYOTA factory part (Part No. 065-543), made in Japan, manufactured by Citizen’s MIYOTA division.
2. Which movements is this winding stem compatible with?
It fits MIYOTA GM00, GM10, and GM15 ultra-slim quartz calibers. The GM00 measures 10½ ligne (23.30mm) with 2.94mm height, featuring a 3-hand with day/date function. A long thread version (065-545) is also available for cases requiring a longer stem.
3. What is the stem specification for GM00?
The stem features Tap 10 (0.90mm) specification. Verify that your crown’s thread matches this specification—Tap 10 is the standard for GM00 movements.
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