13 products
SKX013 Watch Cases for Seiko Mod Builds
An SKX013 mod starts with the case. The SKX013 is the 38mm version of Seiko's SKX007 diver, with 20mm lugs. Every case here is 316L stainless steel with drilled lugs, made to take original SKX013 parts, and comes with a sterile case back for the NH movement, the rotating bezel spring click and the glass and case cover gaskets. Each takes the NH35, NH38 or NH34; with an NH34, use the SKX013 double dome sapphire made for that movement.
Case Styles
- Sub case: silver, sandblasted black, gold and rose gold. 40mm across including the crown guard, 44.5mm lug to lug and 9mm thick without the case back.
- SKX013 replacement case: a silver case; a silver case without crown guard and a matte black case, each with a 3.8 o'clock crown; and a silver case with a 3 o'clock crown and no crown guard, 37.4mm across and 7.2mm thick, with 20mm fat spring bars.
- Mini Turtle conversion: silver with a 3 or 3.8 o'clock crown, and sandblasted with a 3.8 o'clock crown. 39.5mm across, 44.2mm lug to lug and 7.1mm thick, with 20mm lugs.
- Samurai conversion: steel and sandblasted black, 38mm across including the crown guard and 7.3mm thick. They take original SKX013 parts except the bracelet.
Building on Your Case
- Bezel side: an SKX013 rotating bezel and bezel insert, and an SKX013 sapphire crystal.
- The face: an SKX013 chapter ring, a dial and hands.
- To finish: an SKX013 crown and an SKX013 bracelet.
- For the larger SKX007: the SKX007 watch cases.
Frequently Asked Questions
Which movements fit these cases?
Every case here takes the NH35, NH38 or NH34, and comes with a sterile case back for the NH movement. With an NH34, use the SKX013 double dome sapphire made for that movement.
Will my original SKX013 parts fit?
Yes. Every case here is made to take original SKX013 parts. The Samurai conversion cases take everything except the original bracelet.
How does the SKX013 compare with the SKX007?
The SKX013 is the 38mm version of Seiko's SKX007 diver, with 20mm lugs where the SKX007 has 22mm. Every case here is made for SKX013 parts. For the larger watch, choose from the SKX007 watch cases.
Which cases have a 3 o'clock crown?
The 3 o'clock crown cases are a silver Mini Turtle conversion case and a silver replacement case without crown guard. A 3.8 o'clock crown comes on the other Mini Turtle conversion cases, the matte black replacement case and a second silver replacement case without crown guard. Most of our sterile dials fit either position: they have four legs, and you remove the ones you don't need.
Browse the SKX013 watch cases above to find the one for your build.