Seimitsu Alutimo: The Best Arcade Buttons You Can Buy

The Button Debate Just Got Settled

If you've spent any time in the FGC, you know the Sanwa vs. Seimitsu conversation never really ends. Sanwa buttons are everywhere — light, responsive, the default choice for most Japanese sticks. Seimitsu has always had a devoted following for their slightly stiffer, more deliberate feel. And then Seimitsu went and made the Alutimo, and a lot of people stopped arguing altogether.

The Alutimo isn't just a new button. It's Seimitsu taking everything they understand about button construction and building something that genuinely bridges the gap — smooth enough for Sanwa fans, precise enough for Seimitsu diehards, and engineered well enough that the community response has been almost unanimous: "These are the best buttons I've ever used."

We carry the full Seimitsu Alutimo lineup — 30mm and 24mm, 17 colors in solid and clear — and they're in stock right now, ready to ship.

What Makes the Alutimo Different

Cherry MX Silver Hot-Swap Switches

The heart of the Alutimo is a Cherry MX Silver linear switch — one of the fastest, most consistent switches Cherry makes. The MX Silver actuates at 45g with a 1.2mm actuation point and a short 3.4mm total travel. That's a noticeably snappy, direct response with very little pre-travel before the input registers.

What makes the Alutimo smart hardware is that these switches are hot-swappable. If you ever want to experiment with a different feel — heavier actuation, different travel — you can swap the switch without tools or soldering. That's a level of long-term serviceability you don't see in standard arcade buttons, and it means the Alutimo can evolve with your preferences rather than locking you into one configuration forever.

Factory 1mm Shim — The Detail That Changes Everything

Seimitsu ships every Alutimo with a factory-installed 1mm shim under the plunger. This is a small thing that makes a meaningful difference. The shim raises the plunger's resting position slightly, which tightens up the feel and makes the button return crisper and more consistent. It's the kind of tuning that used to require aftermarket modification — Seimitsu just built it in from the factory.

The result is a button that feels immediately responsive on the way down and snaps back cleanly. If you've ever pressed a Sanwa OBSF and wished it had just a bit more snap and feedback, the Alutimo answers that directly.

The Feel: Bridging the Gap

This is where the Alutimo gets interesting. Seimitsu's traditional buttons — the PS-14-G, the PS-14-KN — have a distinctly different feel from Sanwa's OBSF series. More resistance, more deliberate actuation, a shorter plunger travel that some players love and others find too stiff. The Alutimo doesn't land squarely in either camp. The MX Silver switch and the shim combine to give you a button that's light and fast like a Sanwa but with the clean, precise snap Seimitsu is known for. Players who've spent years on either side of the debate are picking these up and immediately comfortable. That's not easy to engineer.

17 Colors — Solid and Clear, 30mm and 24mm

The Alutimo is available in both 30mm (standard action button size) and 24mm (start/select, smaller layouts), and we stock them in 17 colors across solid and clear options. Whether you're doing a monochrome build, matching a specific color scheme, or want illuminated clear buttons over an LED PCB, the options are there.

Building a Full Setup Around the Alutimo

If you're already thinking about a button upgrade, it's worth considering the full build. The Alutimo pairs naturally with a quality lever and a reliable PCB — and right now we have stock on both when a lot of other places don't.

On the lever side, the Sanwa JLF-TP-8Y-SK is the industry standard — easy to mount, well-documented, and pairs well with the Alutimo's fast, light feel. If you want something with more performance-oriented engineering, the Sanwa JLX2-TP-8YT is worth a close look — premium POM construction and a noticeably refined feel compared to the JLF.

For PCB, the Brook P5 Plus Fighting Board covers PS5, PS4, and PC compatibility in one board and pairs cleanly with the Alutimo's hot-swap switch system — since you're not soldering anything to the buttons anyway, the wiring side of the build stays simple and clean.

In Stock. Ready to Ship.

The Seimitsu Alutimo has been one of those parts that generates genuine excitement in the community — and that kind of demand makes availability unpredictable. We have full stock across colors and sizes right now. If you've been thinking about trying them, this is a good window.

Browse the full Alutimo selection, pick your colors and sizes, and put the button debate to rest for yourself.