Order the RC1354 with or without a bracelet: this steel field case of ours takes a 20mm flat end link bracelet, and every other original part of the Seiko SKX007 and SKX009 fits it. Its top is brushed and its sides polished, with drilled lugs and the crown at 3 o'clock. Choose the C0813 slim sterile or C1013 slim sapphire case cover too, and if you'd rather build a darker Seiko mod, the black RC1331 shares its measurements.
Quick specs
| Material | 316L stainless steel |
| Style | Field case |
| Finish | Steel: brushed top, polished sides |
| Crown | At 3 o'clock |
| Diameter | 41.8mm |
| Lug to lug | 51.5mm |
| Case thickness | 6.9mm, case cover not included |
| Lug width | 20mm |
| Lugs | Drilled |
| Bracelet | Use a 20mm flat end link bracelet |
| Bracelet option | Your choice: with a bracelet, or without |
| Case cover | Sold separately: C0813 slim sterile or C1013 slim sapphire, added when you order |
| Dial fit | 28.5mm |
| Fits | Original Seiko SKX007 and SKX009 parts, except the bracelet |
What's included:
Compatibility: Compatible with the NH movement, and can fit a 28.5mm dial. The case takes original SKX007 and SKX009 parts except the bracelet; use a 20mm flat end link bracelet.
Note: Package includes the steel case, the rotating bezel spring click, the glass and case cover gaskets, and two spring bars. Case covers are sold separately: add the C0813 slim sterile or C1013 slim sapphire when you order, and choose with or without a bracelet.
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.