NMK920 Tuna SKX007/SRPD Watch Case Bundle: Gold Finish



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

Aptly named for its resemblance to a can of tuna, the NMK920 Tuna SKX007/SRPD Watch Case Bundle: Gold Finish is our take on one of the most original and iconic (some would say extreme) dive watch designs released by Seiko. Now you can cook up your own Tuna in any style you like.

Not just a pretty face, the Tuna was (and still is!) an engineering marvel designed to solve issues professional divers faced at extreme depths, producing many industry firsts - it's iconic shroud, vented straps and L-gaskets just being a few. If you want to learn more about about the history, design and legacy of the Tuna, we did an excellent Dive Deep article that you can find here.

Case Specifications:
Diameter: 47mm (including shroud)
Lug to Lug: 46.5mm
Thickness: 11.3mm (without caseback)
Lug Width: 22mm

- Case Bundle includes Bezel and Crown
- 316L Surgical Grade Stainless Steel Construction
- Fits all original and aftermarket SKX007/SRPD mod parts (except bracelet)
- Water Resistance as OEM

Each case comes in a set inclusive of:
- 2 x 22mm Spring Bars
- 1 x Bezel Click Spring
- 1 x Crystal Gasket
- 1 x Caseback Gasket

Free International Delivery
  • Your order of S$50 (or equivalent in your local currency) or more gets free standard shipping, and orders above S$200 is eligible for free express shipping! Shipping costs will be automatically deducted at checkout.

Customer Reviews

Based on 32 reviews
Andrew S. (Miami, US)
Stainless steel perfection!

On my wrist right now, it’s a gem and perfectly finished. Mr. Seiko would be proud!

Alex C. (Gardena, US)
NMK 920 Tuna - Blue Steel Finish

I ordered this unique style and finish and it has a vintage feel. I paired it with the white wave dial, domed sapphire crystal, and blue rubber strap. The dial is at the 4 o’clock position. It was really a great build and one of my jewels in my collection. Namoki Mods has so many offerings and styles in different modding parts that it’s sometimes hard to chose. They have been helpful when I send my order in to make sure the parts are compatible.

K.F. (Schenectady, US)
Great product for a great price

As described, this case fits well with skx components for the bespoke look I was looking for.

Glenn T. (New Milton, GB)
Tuna case

Awesome case! Second one I have bought. I swapped the black shroud onto the stainless one for a more OEM look! And I love it.

Ken (Natick, US)

Spot on!