NMK960 Sumo SKX007/SRPD Case: Brushed Black Finish

The NMK960 Sumo SKX007/SRPD Case in Brushed Black Finish taps into one of Seiko’s most beloved modern diver silhouettes—the “Sumo,” nicknamed for its broad shoulders, rounded flanks, and chunky yet surprisingly wearable proportions. It's a big, purposeful dive case that still hugs the wrist and doesn’t feel like a brick. This case carries over those trademark flowing case sides and strong lugs, giving your build that instantly recognizable Sumo stance while staying fully SKX-compatible under the hood.

NMK960 Sumo SKX007/SRPD Case: Brushed Black Finish

Case Specifications:
Case Diameter: 43.8mm
Lug to Lug: 48.4mm
Thickness: 9.5mm (Case only)
Lug Width: 20mm

What's Included?
- Spring Bars
- Bezel Click Spring
- Crystal Gasket
- Caseback Gasket

Parts Compatibility:
Fits all SKX007 Crystals, Crowns, Bezels, Bezel Inserts and Chapter Rings.
Fits our Sumo Watch Bracelet: Three-Piece Brushed Black Finish