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This is likely the ultimate starter DIY experience, perfect for beginners and watch modders just starting out.
We had a few requirements for this kit:
I chose a skeleton movement because this is a great introduction to mechanical watch. After you build this watch, as you wear it you can appreciate the intricate components working together to tell time.
The watch case draws inspiration from vintage divers like the Rolex 5512/5513. Its 40mm size, slightly compact body, fits comfortably on most wrists. The high-dome crystal is crafted from Acrylite 8N, a specialty material that reduces perceived thickness and adds an authentic vintage appearance without the optical distortions common in modern high-domes.
The exhibition case back maximizes the viewing window, giving you a full view of the stunning automatic Seiko NH70 movement inside.
With refined proportions, a proven design, a reliable TMI/Seiko mechanical movement, specialty tools, and top-tier instructional materials from the world’s leading DIY watch brand, this kit is unbeatable. If it’s your first watch assembly, this is the perfect starting point.
The DIY kit includes:
Complete components of one 40mm Diver series mechanical watch
| Watch Case: |
40mm DWC Vintage Diver Case
|
| Case Back: | Stainless steel Exhibition case back (Hardened Mineral Crystal) |
| Bezel: |
40mm DWC Silver Classic Bezel (Stainless Steel) x 1 & Silver Coin Edge Bezel (Stainless Steel) x 1 |
| Bezel Function: | unidirectional 60-click |
| Bezel Insert | 37.6mm DWC Aluminum Diver Bezel Insert - Black & Red |
| Watch dial: | 28.5mm VD03 Silver Crystal Skeleton Luminous Dial (Japan C3 Lume) |
| Hands: | Silver Diver Hands with C3Superlume (TMI NH Series) |
| Movement: | TMI NH70A movement by Seiko |
| Strap: |
20mm DWC Stainless Steel Bracelet (With endlink) 20mm DWC Vintage Leather Strap - Brown |
Time required:120~ mins (Simply enjoy the watchmaking process at your own pace)
Mod potential:★★★★ (With great potential for modding due to Seiko Mod compatibility. Details below)
Difficulty Level: ★★★★ (without the new second hand installation tool)
Difficulty Level: ★★★ (With the new second hand installation tool. Details below)
Hand installation assisting tool is included in this combo
We know. Installing that second hand for the first time can seem a little daunting. That's why we spent a year to invent this second hand installation tool for everyone.

A Seiko made original rotor with Côtes de Genève finish, customized by us. A perfect icing on the cake for the watch you assembled yourself or a mod you are proud of. Best paired with an exhibition case back. Design your custom rotor
Ships within 48 hours · Estimated delivery Jun 21 - Jun 26
US$40
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