DIY NH39 Skeleton Watch Build | Flawless Open-Heart Mod

Описание: In this video, I’m building a fully custom Seiko NH39A open-heart watch — a movement with a visible balance wheel and a 24-hour subdial.
This DIY skeleton watch build shows every step: choosing the dial and hands, fitting the movement, assembling the case, and testing the lume.

The project uses AliExpress watch parts and a PRX-style stainless steel case, giving the build a clean, modern sports look. Along the way, I share some modding tips, talk about Seiko NH-series movements, and show what to watch out for when ordering parts online - because not all AliExpress specs are true.


✅ Watch Parts
Case with integrated bracelet: https://s.click.aliexpress.com/e/_c4P...
Dial: https://s.click.aliexpress.com/e/_c4K...
Hands set: https://s.click.aliexpress.com/e/_c3A...
Small hour hand: https://s.click.aliexpress.com/e/_c4E...
Movement (Seiko NH39): https://s.click.aliexpress.com/e/_c3b...


⚙️ Tools:
Watchmaking tool set: https://s.click.aliexpress.com/e/_oEJ...
Movement holder - https://s.click.aliexpress.com/e/_oD4...
Tweezers (stainless steel) - https://s.click.aliexpress.com/e/_oBh...
Tweezers (plastic tip) - https://s.click.aliexpress.com/e/_c4X...
Dust blower - https://s.click.aliexpress.com/e/_onh...
Case back opener (ball) - https://s.click.aliexpress.com/e/_oFJ...
Hand remover - https://s.click.aliexpress.com/e/_omw...
Dial protector - https://s.click.aliexpress.com/e/_ooA...
Hand press tool - https://s.click.aliexpress.com/e/_op5...
Caliper - https://s.click.aliexpress.com/e/_c3i...
Gasket Silicone Grease - https://s.click.aliexpress.com/e/_c4U...
Gloves - https://s.click.aliexpress.com/e/_c3z...


⏱️ Navigation:
0:00 Intro
0:54 Story of the NH39A Movement
2:26 Dial selection
3:36 Choosing a case
4:59 PRX case close-up
6:12 Hands
7:37 Watch I’m Wearing Right Now
8:05 Assembly
12:14 ChatGPT’s Thoughts
12:49 Lume Check
13:11 Budget
13:41 Outro


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Thanks for watching Watch Minded!

Tags:

#NH39A #SeikoMod #DIYWatch #AliExpressWatch #OpenHeartWatch #AutomaticWatch #WatchBuild #WatchMinded #SeikoNH39 #NH39Build #SeikoMovement #SeikoModding #WatchProjects #PRXStyle #AliExpressFinds