NMK941 GMT Sub SKX007/SRPD Watch Case Mk 2: Black Finish (NH34 Compatible)



Get 20% off any bezel with the purchase of a watch case! Use discount code BEZELBUNDLE during checkout.

Introducing the new and improved NMK941 GMT Sub Case Mk 2 in a Brushed/Polished Black Finish, based on the perennial favourite Submariner, now sleeker than ever and compatible with Seiko NH34 GMT Movement. Simply pair it with any SKX007 Bezel, Bezel Insert and Crystal of your choice for endless Dive and GMT watch build possibilities!

NMK941 GMT Sub Case Mk 2: Black Finish (NH34 Compatible)

Case Specifications:
Case Diameter: 40.5mm
Lug to Lug: 47.5mm
Thickness: 10.0mm (Case only)
Total thickness: 13.5mm (Case with crystal and slim caseback)
Lug Width: 22mm

What's Included?
- Integrated Brushed Chapter Ring (Rehaut)
- Matching Sterile Crown

- 22mm Fat Spring Bars
- Bezel Click Spring
- Crystal Gasket
- Caseback Gasket

Parts Compatibility:
Fits all SKX007/SRPD parts including SKX007 bracelets except Chapter Ring - the case includes an integrated brushed Chapter Ring.

Customer Reviews

Based on 148 reviews
Iain (London, GB)
Perfect Case for GMT's

The case is awesome. The polished sides are done well with the brushed lugs not overlapping any finishing anywhere. The crown guards aren't obtrusive or too big and the sizing of the lugs themselves are great, with them being a slimmer style rather than your thicker maxi-style case from a certain Swiss brand (rhymes with Brolex). Theres a well done slight bevelling on the underneath of the case to take some thickness out when you look at it from the side which is a fantastic little detail. Id pair it with the slim caseback or the standard one as its bordering on being quite a chunk of metal if you want the display caseback, but if you've got thicker wrists then go for it. I've gone for an explorer II look and it is the perfect style of the 16570 with smaller dimensions while being able to get the modern 216570/226570 look with dial/hand combos
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Check the insta for other mods and to see when this build is finished :)


One of the best case I have ever seen, great quality I love it

Greg D. (Jacksonville, US)
Ti Build

Amazing case! The finishing is top quality and the way this watch wears is next level. After wearing the Titanium case everyday for a few weeks now it will be very hard to go back to anything else!!

Anonymous (Andrychow, PL)
NMK926 Nautilus SKX007/SPRD Watch Case Bundle: Polished Finish

Looks amazing with namokimods bracelet, finishing is perfect, fitment is the best, crown works flawlessly

my ig: instagram.com/gonciuu

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GEORGES Z. (Annecy, FR)
Too shinny for my taste

It's the first time I am doing a gold style mod, I find it too shinny. I also had a problem fitting the rainbow chapter ring and I realised that the problem was not the chapter ring but the case.