Upgrade your build with custom Seiko mod dials. NOMODS offers both the standard 28.5 mm dials for NH35/NH36 builds (SKX, 5KX, Royal Oak 37 mm, Petrichor) and the larger 30.8 mm dials for luxury-style cases (Royal Oak 41 mm, Aquanaut). All dials are quality tested for fit, finish, and lume performance — giving your Seiko mod a unique identity.
FAQs — Watch Dials
28.5 mm Dials (NH35/NH36)
Are all 28.5 mm dials for NH35/NH36?+
Yes. 28.5 mm is the standard NH35/NH36 dial size used across SKX/5KX, Royal Oak 37 mm, and Petrichor cases.
Do I need to trim dial feet?+
Most NH35/NH36 dials mount directly. Some cases require repositioning or trimming; check each product’s fit notes.
Which hands match 28.5 mm builds?+
Use NH-series hands (e.g., 150/90/21 or as specified). Always confirm hand hole sizes in the listing.
30.8 mm Dials
Which cases need 30.8 mm dials?+
Royal Oak 41 mm and Aquanaut-style 39–41 mm builds generally require 30.8 mm dials.
Do 30.8 mm dials still use NH35/NH36?+
Yes—most use NH35/NH36. Some are also compatible with NH7x skeleton movements; check the fit notes.
Anything special about crystals here?+
Larger dial windows often pair with taller or domed sapphire. Verify crystal height/profile per case.
Guides & Inspiration
Se alleLet customers speak for us
Perfect Seikoak mod
Everything was perfect. Shipping was fast and the product is of very good quality. In my opinion this is a the best Royal Oak mod you'll find on internet
Ismail Abdelmalki
Seiko mod – Royal Oak 37mm Silver
love the watch
Absolutely love the watch, it look realy good and adjusting the band was really easy
lars de groot
Seiko Mod Royal Oak OEM Birch
Very Reliable
Awesome watch! Excellent piece from these guys. This is the 3rd piece and I have never been let down:
H.
Seiko mod - Nautilus Skeleton Silver
Wonderful watch
Really well made, very happy with the product.
Jay B
Seiko Mod - Royal Oak Skeleton 41mm Gun Metal Gray
Very highly quality RO homage case
Very highly quality RO homage case. 37mm is a perfect fit for smaller wrists.
Samuel
Royal Oak 37mm Seiko Mod Case Silver
Perfect Case, Amazing Brand
This is the perfect size for this style of case. The quality of the cases is top-notch, they feel and look excellent. Additionally, Mathias from Nomods is also very friendly and professional and helped me out with all my questions and customization requests.
Oz
Royal Oak 37mm Seiko Mod Case Silver
Perfect case
Perfect size, perfect size case with the bezel being the right size. It is not too thick or too narrow, it is just right
Oz
Royal Oak 37mm Seiko Mod Case Rose gold
Very nice
Very nice case and very good quality
Nice seller
David
Royal Oak 37mm Seiko Mod Case Silver
Unique and gorgeous watch case
I am creating a custom watch build for my brother who works at a gym. I wanted something equal parts sport and elegance and the Petrichor meets and exceeds my standards for both. Really solid build quality with exceptional finishing, and a comfortable micro-adjustable bracelet to boot. I will be buying from NoMods again.
Samuel
Petrichor Seiko Mod Case Silver
