Original Seiko SKX007 and SKX009 parts go into the RC017 except the crown and bracelet: it screws down with an SKX013 crown, though not the SKX013 slim crown, and it fits the SNZF bracelet. Its case design is that of the SNZF17, the Seiko 5 Sports diver known as the Sea Urchin, so an SKX007-based build can wear that shape. Brushed on top and polished on the sides, this 316L steel case comes alone or with an oyster bracelet, for a Sea Urchin Seiko mod.
Quick specs
| Material | 316L stainless steel |
| Style | SNZF17 (Sea Urchin) case design |
| Finish | Brushed top, polished sides |
| Lug width | 22mm |
| Lug to lug | 44.5mm |
| Diameter | 43mm, including crown guard |
| Case thickness | 6.6mm, not including case cover |
| Crown | Screw-down; takes an SKX013 crown (not the SKX013 slim crown), at 3 o'clock |
| Lugs | Non-drilled |
| Case cover | Your choice: none, NH sterile silver, or NH sapphire |
| Movement | NH movement |
| Dial fit | 28.5mm |
| Fits | Original Seiko SKX007 and SKX009 parts, except the crown and bracelet; the SNZF bracelet |
What's included:
Compatibility: Compatible with the NH movement, and can fit a 28.5mm dial. Use an SKX013 crown, not the SKX013 slim crown.
Note: Choose the case cover (none, NH sterile silver or NH sapphire), and the case alone or with an oyster bracelet, when you order. The crown isn't in the package.
Had this plan inspired by the sbbn049 Tuna that got realized thanks to this case and the T1000 bezel, it's absolutely beautifully made.
Everything fits perfectly and the finish is very good.
Combined the Tuna case with the T1000 bezel and it's super nice. This mod wears exceptionally well for the diameter the numbers say it is. Absolutely recommend for anyone considering a Tuna build.
Great case, awesome customer service!
Did a build in this 6105 conversion case and I'm really satisfied with the quality and tolerances.