Our Story · The Maker

Our vision
behind the machine.

One person who could never find the watch he wanted, so he made it.

The strike-through. The line through PROTOTYPE is a double nod — to Alex Mercer in the video game Prototype (if you say our name wrong, you’ll get it), and to the anime convention where a strike-through means this identity is behind me now. The mark identifies the moment a piece leaves prototype status. It passed the gauntlet. It’s yours.
Devin Mercier, founder of Mercier Prototype, wearing Manx automatic watch
Devin Mercier  ·  Founder · U.S. Military Veteran · Belgian Heritage
Meet Devin Mercier

What's on your wrist
matters.

"There's a moment between every tick when nothing happens. That's the moment I've been chasing my whole life."

When I was a kid, my grandfather wore a watch he never set down. I was fascinated by it, but not for the reason you'd think. I was fascinated by the seconds in between: the gap between one tick and the next, the space where time is but nothing happens. Most people look at a watch to see the hour. I looked at one to see everything else.

I joined the military on a coin flip, it was between that and film school. In boot camp I broke my Fossil on the butt of my gun during training, and chose not to replace it. I liked the idea of keeping a reminder of the exact time my watch died.

That fascination never left. Then, February 2025: I was sitting at my desk, about to send my Omega in for service. I paused, and said it out loud — "Screw it. I'll just do it myself." Went full send that afternoon. Started designing. Refined it again. And again. Worked with a watch engineer on everything my skill set couldn't cover.

Every Mercier is designed by me, to the millimeter. Each case is serial-numbered on the back. Every detail is there with intent: a custom dial we couldn't buy off the shelf, a 2 o'clock pusher that isn't round — which meant engineering a welded sheath with its own gasket to keep the case waterproof. Nothing on this watch exists because it was easy.

Full send. No hesitation.
Devin Mercier · Founder & Maker
"I looked at a watch to see everything else, the space between the ticks where time is, but nothing happens."
The name

Manx. Named for the Isle of Man TT.

The most dangerous road race on earth — a mountain circuit with no runoff, where riders survive by refusing to hesitate. Being willing to be afraid, and going anyway. That's what this watch is named after, and that's how this company gets built. Full send.

What your Manx is funding

Three custom movements.
Already in development.

The Manx runs a Miyota 9122 automatic — reliable, honest, proven. Behind it, three custom Sellita-based movements are in development for future Mercier releases. Every Manx sold funds that work. You're not just buying watch Nº of 200 — you're underwriting the next movement.

Who it's for

Not gate-kept. Not locked in a safe.

This watch is for anyone who wants one. No waitlist games, no application, no flex culture. And when you order, you hear from me — not a support queue. Every order gets a personal call, text, or email. Every one. Then go wear it. Dings and scratches are proof, not damage — an older Mercier with a real patina is worth more than a factory-perfect one that never left the box.

🛡️

5-Year Warranty

We stand behind every piece

↩️

30-Day Returns

Wear it, live with it, decide

Individually Numbered

Each case serial-engraved · Edition 01

🇧🇪

Belgian-Designed

Veteran-owned, made with intent

Wear the story.Meet Manx.

The everyday luxury automatic watch at the center of it all, individually numbered, built to be lived in.