A GMT Dive Watch set for those who loves a classic GMT - watchmaking kit - coke diver
Coke GMT Dive watch with ceramic coke (red/black) bezel and Seiko GMT movement (TMI NH34)
Red-Black "Coke" GMT - lume shot
DIY WATCH CLUB - GMT diver with seiko NH34 movement
DIY Watch Club Seiko GMT Watch Hand Install Setting Tools for Seiko GMT movements (TMI NH34, Seiko 4R34)
DY WATCH CLUB - Watchmaking tool set (Pro tools box set in wooden box)
DY WATCH CLUB - Watchmaking tool set (Pro tools box set in wooden box)
DY WATCH CLUB - Watchmaking tool set (Pro tools box set in wooden box)

A GMT Dive Watch set for those who loves a classic GMT

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Red-Black "Coke" GMT watch-building experience. Amazing for those who love Rolex GMT Master

If you notice he loves Rolex and Tudors with a two-color bezel insert (the ring outside the watch), this kit can't go wrong.

The "Coke" Red Black GMT is a classic GMT style that is very sought after. It ties in with our "Batman" Blue Black GMT in popularity but we believe the red-black is a safer option as a gift. 

This is a Seiko GMT movement watch with sapphire crystal, FKM rubber straps and even comes with a ceramic bezel (which all watch lovers love). The watch is likely the best GMT in its class and the pro-tool kit pair very nicely with such a premium-looking watch.

We have YouTubers placing this watch side-by-side with their Rolexes, as this is a beautiful, self-built GMT that doesn't even have a hint of "I'm trying to be Rolex" on the design, yet shares the same attractiveness as their GMT-Master. Moreover, this is a much better conversation starter :)

The DIY kit includes:

  • Complete components of one 42mm GMT Diver series mechanical watch 

    Watch Case:

    42mm DWC Classic Diver Case

    • Material: SS316L Stainless Steel
    • Crystal: Sapphire double dome with Anti-Reflective coating / Hardened Mineral Crystal
    • Case size: 42mm (42mm bezel, 41mm body)
    • Lug size: 22mm
    • Lug-to-lug: 47.5mm
    • Thickness: ~14mm
    • Water-resistant: 20ATM (assuming correct assembly)
    • Crown: Screw-down
    Case Back: Stainless steel Exhibition case back (Hardened Mineral Crystal)
    Chapter Ring: CR-01-NH Black chapter ring with white marking (TMI NH Series)
    42mm DWC Classic Bezel (Stainless Steel)
    Bezel function: unidirectional 120-click / bi-directional 24-click (updated 2023 Q4)
    Bezel Insert:
    39.4mm Ceramic Coke GMT Bezel Insert (Black/Red - Type B)
    Watch dial: 28.5mm DWC D03 GMT Sandwich Dial (Japan BGW9 Superlume)
    Hands: Silver Diver Hands with Japan BGW9 Superlume (TMI NH Series) 
    Red GMT hand (24 hours hand) with C2 lume
    Movement: TMI NH34 GMT movement by Seiko
    Strap: 22mm DWC FKM Rubber Strap (Black)
  • Watchmaking tool - GMT hand installation tool is included in every GMT set
    • DWC professional watchmaker tools with Box upgrade
  • Complete video instructions (English, Cantonese & Mandarin)

Time required:120~ mins (Simply enjoy the watchmaking process at your own pace)

Mod potential:

Difficulty Level: (without the new second hand installation tool)

  • Hand installation will be slightly more challenging than regular 3-hand watch installation
  • Key challenge: second hand installation

Difficulty Level:  (With the new second hand installation tool. Details below)


DIY Watch Club - Watchmaking tool - Profession Tools box setThis is our Pro Tool Kit, a DWC in-house design from top to bottom. This is a lot more than a mere step up from standard Amazon watch-making tools; it is a collection of tools we designed and crafted to give you the best watchmaking experience possible.

And in watchmaking, just like many other crafts, the quality of the tools does affect the quality of the outcome.

Learn more about it here: What Makes a Good Watchmaking Tool


This dive watch is partially compatible with Seiko Mods. For detail please check out our blog post here: 



DIY WATCH CLUB - Custom Rotor for seiko NH35, NH34

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