A Royal Oak 37 mm featuring a genuine OEM Seiko dial with a distinctive birch pattern — an organic, wood-grain-inspired texture that stands apart from the standard waffle and sunburst dials common in the mod community. This factory-produced dial delivers the printing precision and lume consistency that only OEM Seiko components provide. The V1 Royal Oak case at 11.2 mm thick houses an NH35 automatic movement with hacking and hand-winding. Sapphire crystal, 100 m water resistance, integrated stainless steel bracelet. Clearance pricing — limited units remain.
Specifications
Specification
Detail
Case Size
37 mm
Thickness
11.2 mm (V1 case — not ultra-thin V2)
Material
316L Stainless Steel
Movement
Seiko NH35 (automatic, hacking, hand-winding)
Power Reserve
Approx. 41 hours
Crystal
Sapphire
Water Resistance
100 m
Dial
OEM Seiko birch pattern, 28.5 mm
Dial Size
28.5 mm
Bracelet
Integrated stainless steel
Caseback
Screw-down stainless steel
Lume
Applied indices with luminous fill
Compatibility
This is a fully assembled watch using the V1 Royal Oak 37 mm case. The modular design allows component swaps:
Dial: OEM Seiko birch pattern dial (pre-installed, 28.5 mm) · Replaceable with any 28.5 mm dial compatible with NH35/NH36 movements
Hands: Pre-installed Royal Oak-style hands · Replaceable with any NH-series compatible hands
The birch pattern dial is one of the most distinctive textures in Seiko’s OEM catalog — inspired by the grain patterns of birch wood, it creates flowing vertical lines across the dial surface that catch light differently than the more geometric waffle or sunburst patterns. This dial was factory-produced by Seiko, not by a third-party manufacturer, which means the texture relief is deeper and more consistent than aftermarket alternatives. Paired with the V1 Royal Oak 37 mm case at 11.2 mm thick, sapphire crystal, and 100 m water resistance, this build offers a unique dial texture that is extremely difficult to source individually. The clearance pricing reflects the shift to the V2 ultra-thin case platform, not a quality concern with the watch.
Frequently Asked Questions
What makes the birch pattern dial special?
The birch pattern is an organic, wood-grain-inspired texture that creates flowing vertical lines across the dial. Unlike the geometric waffle pattern or radial sunburst, the birch texture has a natural, asymmetric quality. This particular dial is OEM Seiko — factory-produced with deeper texture relief and more consistent finishing than aftermarket reproductions.
Why is this watch on clearance?
The clearance pricing reflects the transition from the V1 case (11.2 mm thick) to the current V2 ultra-thin case. The watch itself is fully functional with the same sapphire crystal, 100 m water resistance, and NH35 movement found in current models. The OEM birch dial is a unique component that adds value beyond what the clearance price suggests.
Can I move the OEM birch dial into a V2 case?
Yes. The OEM birch dial is a standard 28.5 mm size compatible with both V1 and V2 Royal Oak cases, as well as any other case that accepts 28.5 mm dials with NH35/NH36 movements. Our build guide covers the dial swap process step by step.
Nomods is an independent brand. Our products are original designs inspired by iconic watch aesthetics. We are not affiliated with or endorsed by any luxury watch manufacturer. All brand names are used for reference purposes only. This watch is assembled by us using genuine TMI (Time Module Inc.) movements, a subsidiary of Seiko Instruments Inc., part of Seiko Group Corporation. This product is not an official Seiko watch.
Orders are processed within 1–3 business days (excluding weekends and holidays).
We accept returns/exchanges according to our policy for unworn items in original condition. Custom changes may have different terms — contact us for questions
I opted for the silver case , nh72 movement & v2 rose-gold hands.
Worked out great!
Amazing quality and very professional communication.
Can absolutely recommend.
I asked for the watch to be assembled before shipping….no problem.
All and all: nothing but praise for the Nomods team.
A
Anthony
Product as described
Product as described. Came with adjusting tool with easy removal of screws of the bracelet. Staff responded to email questions.
L
Luis Ballin
Seiko Oak 37mm silver
Die Uhr ist exakt so schön wie auf den abgebildeten Fotos und steht diesen in nichts nach.
Material, Verarbeitung und Elleganz sind meine Highlights.
Außerdem kommt die Uhr in einer sehr schönen Verpackung und Case inklusive einem Stellwerkzeug, welches super leicht zu bedienen ist.
Vielen Dank an Mathias und sein Team!
Liebe Grüße aus Deutschland 🇩🇪
A
Anonymous
Very satisfied
Beautiful case.
This was one of the only 37mm RO mod cases I could find, and I’m glad I went for it. The price is slightly more premium, but you get great quality in return. It has good weight, and the dimensions are great. While not a 1:1 to the real thing, it definitely does a good job of paying homage to the RO.
It was also packaged and protected very well, and so it came in perfect condition. Shipping time was good but do understand that it is dependent on where you live.
This has made me a fan of the brand, and I will definitely keep a lookout for more case iterations and new products in the future.
A
AG
nice elegant watch
good quality machining , the watch looks great, no complaints
