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The Hattori YM12A is a genuine Japanese-made 1/5-second chronograph movement known for its accuracy, durability, and long battery life. Ideal for professional watchmakers and OEM production, it delivers long-lasting performance and refined timing precision. This product is brand new and genuine, supplied in SOFLY packaging, with winding stem included, battery NOT included.
Brand:Hattori (by Seiko Time Corp./S. Epson)
Model:YM12A
Origin:Made in Japan
Movement Size:12 ligne (27.60mm)
Movement Height:4.34mm
Chronograph Precision:1/5 second
Battery:SR927SW
Battery Life:Approx. 5 years
Packaging:SOFLY packaging
Included:Winding stem included / Battery NOT included
Quality:Genuine original, brand new
1. Is this movement an original Hattori genuine part?
Yes. It is an original Hattori factory movement, made in Japan, manufactured by S. Epson Corp., a Seiko Group company.
2. What is the chronograph precision of this movement?
The YM12A features 1/5 second chronograph precision. The movement height is 4.34mm, measuring 12 ligne (27.60mm), suitable for medium-thickness case designs.
3. What is the difference between YM12A and YM14A?
Both share the same dimensions and precision (12 ligne, 4.34mm, 1/5 second). The YM12A is an upgraded version of the YM14A, with optimized circuit design and energy efficiency.
Fast Worldwide Shipping – Orders are dispatched within 3 business days.
Competitive Pricing – Great value across watch movements, replacement parts and watchmaking tools.
Extensive Selection – More than 3,000 watch movements, parts and accessories available.
Trusted Worldwide – Trusted by watchmakers, repair professionals and watch enthusiasts worldwide.
Personalized Sourcing – Can’t find the part you need? Contact [email protected] or WhatsApp +86 18620212114.








