Original NH35A Automatic Mechanical Watch Movement – Crown at 3/3.8/6, Black Date Wheel, 24 Jewels Self-Winding Watch Repair Replacement Module

Upgrade your watch build with the Original NH35 Movement (NH35A)—a legendary automatic mechanical caliber trusted by watchmakers worldwide. Designed for precision, durability, and smooth performance, this movement is a top choice for watch mods, repairs, and custom dial builds, especially for SKX-style cases like the SKX007 and Sumo series.

Powered by Seiko’s proven engineering, the NH35A delivers reliable self-winding performance with a classic mechanical feel that enthusiasts love. Whether you're restoring a watch or building a custom masterpiece, this movement brings professional-grade accuracy to your wrist project.

⚙️ Why the NH35A Movement Is a Watchmaker Favorite:

• 🕰️ Japan Original Automatic Movement – Trusted Seiko-caliber reliability
• 🔄 Self-Winding & Manual Wind Capability – Flexible mechanical operation
• 📅 Black Date Wheel Display – Stylish and easy-to-read calendar function
• 🎯 Crown Compatibility (3.8 / 3 / 6 positions) – Perfect for mod projects
• 💨 21,600 BPH Smooth Sweep – Elegant continuous seconds motion
• 🔋 41-Hour Power Reserve – Long-lasting mechanical performance
• 🛠️ Perfect for Watch Mods & Repairs – Ideal for DIY watchmakers
• 🔧 Hacking Seconds Feature – Precise time-setting control
• ⚙️ Bi-Directional Magic Lever Winding System – Efficient energy storage

🧩 Built for Serious Watch Customization

This NH35A movement is widely used in professional watch modding due to its compatibility with popular cases and dials, especially 28.5mm dial builds. With a robust 24-jewel construction and Seiko’s Diashock system, it ensures durability even under daily wear conditions.

Its flexible crown positioning (3, 3.8, and 6 o’clock options) makes it a go-to choice for custom watch designs and restoration projects.

🔧 Perfect For:

• Watch modding enthusiasts
• Professional watchmakers
• SKX007 / Sumo style builds
• Mechanical watch repairs
• Custom dial and case projects

💡 The Heart of a True Mechanical Watch

The NH35A isn’t just a movement—it’s the engine behind countless iconic custom watches. Known for its balance of precision, reliability, and modding flexibility, it remains one of the most respected automatic calibers in the watch world.