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: 44mm
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

Customer Reviews

Based on 8 reviews
Manuel V. (Winter Park, US)
Black Tuna

I beautiful and it will make a great watch.

Charles G. (Cypress, US)
Awesome Case!

This case is great! Fit and finish are exquisite!

A very satisfied customer (Grove City, US)
Best AM tuna case hands-down

It’s very nicely finished compared to some of the eBay tuna cases I’ve encountered and its 3.8 o’clock crown position and full compatibility with standard SKX007 mod parts is exactly what I’d been looking for.

Profound feeling

There may be pros and cons to reproducing the tuna can design that has continued from the past with skx007. But I like this case.

Reviewer avatar
Eddie Tan (Singapore, SG)
Blue Tuna

Beautifully crafted Tuna Case in Blue!!! Good size. Highly recommended for those looking for something different.