Collection: Watchmaking Kit: GMT Watches - Mechanical

Seiko GMT mechanical movement. GMT Coke Bezel. Red - Black ceramic bezel

Coke GMT Automatic Diver with Ceramic Bezel Inserts

Pepsi GMT diver. Red Blue aluminum-steel hybrid bezel insert. Powered by Seiko NH34 GMT

Pepsi Red-Blue bezel insert for this legendary GMT look

All black GMT automatic watch. PVD case, sapphire crystals, Seiko GMT movement

PVD Blackout Automatic GMT

Seiko NH34 (a.k.a. 4R34) with Batman Ceramic Bezel Insert

GMT - Batman | Ceramic bezel Inserts with Superlume



Build your own mechanical GMT watches

Seiko NH34 (a.k.a. 4R34) mechanical GMT movements, optional lumed ceramic bezel inserts, sapphire crystals... don't just build any watch. Build an amazing GMT.

17 products
  • [Modding Starter Combo] DIY Kit Bundle | 42mm Dive GMT Coke, Pespi, and Silver steel Bezel | Seiko Automatic GMT movement | DWC-D03
    [Modding Starter Combo] DIY Kit Bundle | 42mm Dive GMT Coke, Pespi, and Silver steel Bezel | Seiko Automatic GMT movement | DWC-D03
    Regular price
    ¥121,800
    Sale price
    ¥86,200
  • NEW ARRIVAL - Plated 925 Silver 42mm PEPSI GMT Dive Watch kit | Vintage Diver with Patina | Aging experience | Seiko NH34
    NEW ARRIVAL - Plated 925 Silver 42mm PEPSI GMT Dive Watch kit | Vintage Diver with Patina | Aging experience | Seiko NH34
    Regular price
    ¥80,900
    Sale price
    ¥68,500
  • 42mm White Dial "Explorer" GMT Watch Kit | Stainless Stain Bracelet | Silver GMT Bezel | DWC-D03
    42mm White dial Diver Dress GMT Watch Kit | Stainless Stain Bracelet | Silver GMT Bezel | DWC-D03
    Regular price
    ¥79,100
    Sale price
    ¥67,600
  • DIY Watchmaking Kit | 42mm NH34 GMT BATMAN Dive Watch | Automatic GMT Blue and Black | Ceramic Batman GMT | DWC-D03 RIVAL
    DIY Watchmaking Kit | NH34 GMT BATMAN Dive Watch | Automatic GMT Blue and Black | Ceramic Batman GMT | DWC-D03 RIVAL
    Regular price
    ¥82,700
    Sale price
    ¥70,200
  • DIY Watchmaking Kit | NH34 42mm GMT Dive Watch | Seiko GMT movement | Ceramic Coke GMT Bezel | DWC-D03
    DIY Watchmaking Kit | NH34 GMT Dive Watch | Seiko GMT movement | Ceramic Coke GMT Bezel | DWC-D03
    Regular price
    ¥82,700
    Sale price
    ¥70,200
  • 42mm White Dial "Pepsi" GMT Dive Watch | Seiko GMT movement | Aluminum-Steel Hybrid Red & Blue GMT Bezel | DWC-D03
    42mm White Dial GMT Pepsi Dive Watch | Seiko GMT movement | Aluminum-Steel Hybrid Red & Blue GMT Bezel | DWC-D03
    Regular price
    ¥79,100
    Sale price
    ¥67,600
  • 42mm White dial "Coke" Diver Dress GMT Watch Kit | Stainless Stain Bracelet | Ceramic Red-Black GMT Bezel | DWC-D03
    White dial
    Regular price
    ¥90,700
    Sale price
    ¥77,300
  • 42mm "Sprite" Diver Dress GMT Watch Kit | NH34 GMT Dive Watch | Stainless Stain Bracelet | Green-Black GMT Bezel | DWC-D03
    Regular price
    ¥79,100
    Sale price
    ¥67,600
  • 42mm "Batman" Diver Dress GMT Watch Kit | NH34 GMT Dive Watch | Stainless Stain Bracelet | Ceramic Blue-Black GMT Bezel | DWC-D03
    Regular price
    ¥88,900
    Sale price
    ¥80,000
  • DIY Watch Kit | 42mm Blue GMT Dive Watch | Seiko NH34 Automatic GMT | 24hr Blue Bezel (Stainless Steel) | DWC-D03
    DIY Watch Kit | Blue GMT Dive Watch | Seiko NH34 Automatic GMT | 24hr Blue Bezel (Stainless Steel) | DWC-D03
    Regular price
    ¥72,000
    Sale price
    ¥72,000
  • A GMT Dive Watch set for those who loves a classic GMT
    A GMT Dive Watch set for those who loves a classic GMT - watchmaking kit - coke diver
    Regular price
    ¥95,100
    Sale price
    ¥95,100
  • DIY Watch Kit | 42mm GMT Sprite Dive Watch | Seiko GMT movement | Aluminum-Steel Hybrid Green & Black GMT Bezel | DWC-D03
    DIY Watch Kit | GMT Sprite Dive Watch | Seiko GMT movement | Aluminum-Steel Hybrid Green & Black GMT Bezel | DWC-D03
    Regular price
    ¥73,800
    Sale price
    ¥73,800
  • DIY Watch Kit | 42mm GMT Pepsi Dive Watch | Seiko GMT movement | Aluminum-Steel Hybrid Red & Blue GMT Bezel | DWC-D03
    DIY Watch Kit | GMT Pepsi Dive Watch | Seiko GMT movement | Aluminum-Steel Hybrid Red & Blue GMT Bezel | DWC-D03
    Regular price
    ¥73,800
    Sale price
    ¥73,800
  • [LIMITED] DIY Watchmaking Kit | 42mm PVD GMT Coke Red-Black Dive Watch | Seiko Automatic GMT movement | DWC-D03
    [LIMITED] DIY Watchmaking Kit | PVD GMT Coke Red-Black Dive Watch | Seiko Automatic GMT movement | DWC-D03
    Regular price
    ¥101,300
    Sale price
    ¥101,300
  • 42mm "Coke" Diver Dress GMT Watch Kit | Stainless Stain Bracelet | Ceramic Red-Black GMT Bezel | DWC-D03
    42mm
    Regular price
    ¥88,900
    Sale price
    ¥88,900
  • 42mm White dial "Batman" GMT Watch Kit | NH34 GMT Dive Watch | White FKM Rubber Band | Ceramic Blue-Black GMT Bezel | DWC-D03
    White dial
    Regular price
    ¥82,700
    Sale price
    ¥82,700
  • [LIMITED] DIY Watchmaking Kit | 42mm PVD Black GMT BATMAN Dive Watch | Seiko Automatic GMT movement | DWC-D03
    DIY Watchmaking Kit | PVD Black GMT BATMAN Dive Watch | Seiko Automatic GMT movement | DWC-D03
    Regular price
    ¥101,300
    Sale price
    ¥101,300