NMK955 VK Chronograph Case: Steel Finish
For years, Seiko modding has revolved around NH mechanical movements—but with this NMK955 VK Chronograph Case, we’re shifting gears. Purpose-built for VK mecaquartz chronograph movements, this case unlocks a whole new world of modding possibilities: slimmer builds, true chronograph functions, and that satisfying snapback reset.
Inspired by the timeless silhouette of the vintage racing chronographs, the NMK955 blends classic motorsport design with modern modularity. Whether you’re building a panda dial vintage racer or a bold regatta timer, this case is the perfect foundation for your next chronograph project!
Case Specifications:
Case Diameter: 39mm
Lug Width: 18mm
Lug to Lug: 46mm
Thickness: 8.1mm (Case only)
Total thickness: 12.5mm (Case with crystal and caseback)
Dial Size: Accepts 29.5-31.5mm Dials
Dial Opening Size: 28.5mm
Water Resistance: 10ATM
What's Included?
- Pre-Assembled Boxed Crystal (Clear AR)
- Integrated Fixed Bezel and Chapter Ring (Rehaut) available in 2 Designs
- Matching Sterile Screw-down Crown and Chronographer Pushers
- Brushed Caseback and Gasket
- VK Movement Spacer
- Springbars
Parts Compatibility:
Accepts 30.5–31.5mm Dials
Movement Compatibility:
Seiko Mechaquartz Chronograph VK61, VK63, VK64, VK67
Yes, the minute track can be slightly misaligned sometimes, I don't really notice it. For me, the best vintage Chrono case on the market currently. One of the very few that don't have the external (Speedy/Daytona Style) Tachy Bezel!
Case build quality is good, misprinted minute markers(at 3 minute), acceptable but not for the money
Best VK case in the market. I’ve build three of these guys already
Great case design! Very thin profile and a cool retro vibe. I loved how this mod turned out with this case.
Grea quality & service
I actually received the wrong case (without markers) which is being replaced (thanks for sorting Namoki!) - I can say the one I received was great quality and I’ll consider it for next build also