41mm Royal Oak Case – Bold Proportions for Seiko Modding
This 41mm Royal Oak-inspired case is made for modders who want maximum wrist presence. Compatible with NH35, NH36, NH70, and NH72 movements, it features clean geometry, an integrated bracelet fit, and a brushed finish that elevates any Seiko mod build. Ideal for statement pieces with open-heart dials or bold color combinations.
41mm Royal Oak Case – Statement Builds Start Here
Go bold with the 41mm Royal Oak case—crafted for Seiko modders who want serious wrist presence. Designed to fit NH35, NH36, NH70, and NH72 movements, this case features a larger profile, integrated lugs, and sharp lines that define the Royal Oak silhouette. Ideal for skeleton dials, open-heart builds, or any mod that deserves attention.
FAQs
A “Seiko Mod” refers to a custom Seiko watch that has been altered to match an individual’s style or functional needs.
Modifications can be purely aesthetic, such as changing the dial, case, hands, or bezel, or functional, such as improving movement accuracy or durability with features like water resistance. These modifications provide watch enthusiasts the opportunity to create a unique timepiece that fits their personal preferences and enhances their watch-wearing experience.
Seiko modding is a fun and creative way to customize your watch. If you’re just starting, you’ll need basic tools and parts like dials, braces and hands to personalize your timepiece. Explore our shop for compatible parts, and feel free to reach out for help identifying the right components or installing them. Our resources are here to make your modding journey easy and enjoyable!
Shipping from our workshop in Norway has an estimated delivery of 7-14 days worldwide.
Let customers speak for us
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
Gold Royal Oak Dial
Fantastic quality. Looks exactly like the image. Looks great.
Jesse Parkin
Royal Oak Dial 28.5mm Gold
Excellent Quality and Customer Service
I recently ordered a watch case from this company and was blown away by the quality. The craftsmanship is outstanding — solid, well-finished, and clearly made with attention to detail. It exceeded my expectations in every way.
What impressed me even more was their customer service. There was a small issue with the shipping, but they handled it quickly and professionally. They responded fast, kept me updated, and made sure everything was resolved without any hassle.
It’s rare to find a company that delivers both top-tier products and great support. Highly recommended if you’re looking for premium watch modding cases and a team that truly stands behind what they sell.
B.S.
Nomods
Exactly what I was looking for
After years of research I finally found the 37mm case which is perfect in size. Excellent quality!
L.G.
Royal Oak 37mm Seiko Mod Case Silver
Perfect size, perfect platform.
I’ve always loved the look of the Royal Oak, really any Genta case design. I’ve been a fan of his work for as long as I can remember. When I came across the Nomods website I was blown away. Not only did they sell one of my favorite case designs of all time, they sell it in a wide variety of color options and what I consider the perfect size. There are other Royal Oak cases out there but this is the only one in 37mm that takes a 28.5mm dial with zero modifications. I’m very excited to see what Nomods has planned for the future with new releases. They are doing things no other mod store is doing.
Ben Fugerer
Royal Oak 37mm Seiko Mod Case Black PVD
Great Dial!
Mathias from Nomods is excellent, and very responsive. I had a few questions about the product and he got back to me right away and was very helpful. I ended up buying the 37mm AP case and skeleton dial and they are beautiful and well made. I appreciate the quality and customer service!!
Bill Beegan
Royal Oak Dial 28.5mm Rose gold