NMK920 Tuna SKX007/SRPD Watch Case: Brushed 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: Brushed 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 11 reviews
Reviewer avatar
England Esteban (Winnipeg, CA)
My new daily!

Love the case! Thanks so much namoki!

Robert Clifton (Dallas, US)
Awesome Tuna Case!!

Just did a scratch build with the Namoki Tuna SKX007/SRPD Watch Case. My new favorite! Everything fits for from the SKX007 parts. It's perfect! Thank You and keep up the good work.

Metheorite Tuna

Finnaly got it!
Perfect case for a perfect metheorite dial.

M. 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!