Seiko Mods with Multiple Crowns: Is this Going to be The New Trend?

Single crown cases just have that clean, traditional look, but watches with multiple crowns can even be more captivating. There’s just something about it that makes it somehow look more premium - the hint at adventure, the tool-watch heritage, and the added complication that adds to the mechanical marvel.

Just think of supercompressors with internal bezels or Alpinist watches with rotating compass rings. Now, Seiko modders are bringing that look to their own wrists, and we’re here to help bring those dual (and even triple, kind of) crown builds to life. 

Why Are Watches with Multiple Crowns Trending Right Now?

Watches with more than one crown aren’t just for looks; there’s real purpose behind the extra knobs. In fact, multi-crown timepieces have been around for decades, mostly in tool watches built for specific jobs like diving or exploring.

 

Source: @may_times on IG

 

One of the most well-known examples is the supercompressor-style case. It uses a second crown to control an internal rotating bezel, which lets divers keep track of time underwater without letting water sneak into the case. That clever design was a hit back in the 1960s with classic dive watches from the houses of Longines, Hamilton, IWC, and more.

 

Source: @teddybaldassarre on IG

 

Another favorite is the Alpinist-style case, where the second crown adjusts a built-in compass bezel. That’s super handy for hikers and adventurers who want a little extra direction (literally) without pulling out a phone or map. Doing it old-school, as they say.

Some watches, like our upcoming Seiko Panda-inspired chronograph case, have three protrusions, but there’s actually only one crown and two pushers for the stopwatch feature. These designs add a sporty vibe while keeping a vintage feel that collectors love.

But even beyond the features, there’s just something satisfying about the look. Multiple crowns give a watch that extra edge, like it has a secret purpose only real enthusiasts understand. For Seiko modders, this opens the door to builds that are more than just good-looking. They're functional, interesting, and packed with character. 

 

Why Multi-Crown Seiko Mods Are Taking Off

The Seiko modding scene has always been full of experimentation, but lately we see that multi-crown builds are drawing more and more attention. And it’s not just a quick fad either - though it may not be as popular as your usual Rolex-inspired mods, it looks like dual crown builds are no longer just a quirky choice for hardcore collectors, but something that even the average watch fan can appreciate. But what’s behind the rise?

 

Source: @smartillo34 on Reddit

 

For one, multi-crown watches just look cool. They tap into vintage design language that reminds people of classic dive and field watches, but with a modernised finish. Add the fact that they often serve a real purpose and you’ve got a case style that’s both stylish and functional.

There’s also the social media factor. In a sea of SKX builds and Sub clones, a dual-crown mod immediately stands out. It signals effort, thought, and creativity; qualities every builder wants to flex. And as more purpose-built cases hit the market, these types of builds just get more accessible.

 

Source: @jjsspprr on Reddit

 

And for the dual crown cases that we offer, there are additional customization options. Our NMK946 Dual-Crown Diver case has 2 color finishes, with 2 different internal bezel designs and 2 different lume colors. Our NMK951 Alpinist-Style Dual Crown case on the other hand, is getting more internal bezel design options like diver style inserts, due to popular demand from our modfam. This makes it more appealing to modders who really want to tweak all of the parts that go into their build.

 

A Closer Look at Our Multi-Crown Cases

Source: @triowens on Reddit

 

Let’s start with the NMK946 Dual-Crown Dive Case, our take on the historied supercompressor-style diver. This case brings serious vintage charm with its two-crown setup: one for setting the time, and the other for rotating the internal bezel. It’s a feature pulled straight from classic 60s EPSA divers, reimagined for today’s modding scene. With a case diameter of 39mm and a thickness of just 12mm (with domed crystal and slim caseback), it’s a very wearable piece that doesn’t compromise on strength or reliability. It’s rated at 100m water resistance and is fully compatible with NH35/36 movements. Also note, the inner bezel comes in two designs: Mk1 for a traditional dive look, and Mk2 for something more minimalist, each available in C3 Green or BGW9 Blue lume for night-time visibility.

 

Source: @fiatjeepdriver_ on Reddit

 

Next up is the NMK951 Alpine Tool Case, our tribute to the iconic Seiko Alpinist. If your dream build leans more toward field watches or tool-watch territory, this one’s for you. It also sports a dual-crown layout, with the main crown at 3 o’clock for time-setting and a second crown at 4 o’clock that controls an internal rotating compass ring. This internal bezel comes in nine design and color combinations, and you can choose between a clean smooth bezel or a brushed GMT bezel if you’re adding GMT functionality to your build. It’s slightly more compact than our dive case, measuring 39mm wide and only 11.1mm thick with the crystal installed, making it sleek on the wrist and easy to wear all day. With 100m water resistance and drilled lugs for easy strap swaps, it’s a solid base for modders who want something rugged and adventurous.

 

Source: @finemods on IG

 

Chronograph mods are almost at the starting line. Our upcoming Chronograph case draws inspiration from the iconic Seiko Panda aesthetic, and will give modders another new platform to express their creativity. Designed around the Seiko VK series mecha-quartz movements (VK61, VK63, VK64, and VK67), this 39mm case keeps things clean and compact, with a 46mm lug-to-lug and a wearable total thickness of 12.5mm including the crystal and caseback. It features a pre-installed boxed sapphire crystal with clear AR, a crisp dial opening of 29.5mm, and accepts dials in the 30.5 to 31.5mm range which is perfect for those working with classic panda or skipper-style layouts.

 

Wrap Up

So how about it, ready to build a watch that’s a bit mechanically different than the rest? If you’re looking for a standout design that will instantly set your build apart from others, then maybe a multi-crown build should be on your planning board. The modding process is not that different from what you’re used to with single crown cases, but the look of the resulting watch is going to look a lot more intriguing!

Ready to make your own statement? Check out our NMK946 Dual-Crown Diver and NMK951 Alpine Tool cases today. And don't miss our upcoming Chronograph case - we know you guys are very excited. Just a bit more waiting!

Happy modding!