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This is a genuine MIYOTA winding stem (Part No. 065-413) for the 5R21 and 5R32 movements, made in Japan, designed for ultra-small quartz calibers. It serves as the core mechanical component connecting the crown to the movement for time setting and manual winding functions. This product is brand new and original, featuring Tap 12 (0.90mm) specification, essential for servicing and repair of 5R21/5R32 movements.
Part Number：065-413
Compatible Movements：5R21 / 5R22 / 5R32 ultra-small quartz calibers
Origin：Made in Japan
Quality：Genuine original, brand new
Thread Spec：Tap 12（0.90mm）
1. Is this winding stem an original MIYOTA genuine part?
Yes. It is an original MIYOTA factory part (Part No. 065-413), made in Japan.
2. Which movements is this winding stem compatible with?
It fits MIYOTA 5R21 (2-hand) and 5R32 (3-hand) ultra-small calibers, also compatible with 5R22 and Citizen 5420/5421/5422/5430/5431/5437 models. The movement series is designed for ladies’ watches, all measuring 3¾ × 6 ligne.
3. Is the stem compatible with both 5R21 and 5R32?
Yes. Both movements share the same winding stem (Part No. 065-413) with Tap 12（0.90mm） specification. Although functions differ (5R21 is 2-hand, 5R32 is 3-hand), the stem is fully interchangeable.
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