Mechanical Precision × Systems Engineering

Engineered by Systems Builders

Three mechanical watches. Fifteen years of software discipline behind every component, tolerance, and finish. First production run: late 2026.

Reserve Your Place
Kelsus Chronograph — design concept featuring mother of pearl dial, blued hands, and chronograph subdials

We've spent fifteen years building software—custom systems, enterprise integrations, automation platforms for clients who can't afford downtime. We've shipped code to production at 2 AM. We've debugged race conditions across distributed systems. We know what precision means when failure costs real money.

A mechanical watch runs on the same principles. Tolerances measured in microns. Gear trains that need to maintain accuracy across 28,800 beats per hour. Spring tensions calibrated to deliver consistent power over 40+ hours. Every component in a mechanical movement has a single job, and it has to execute that job millions of times without failure.

That's engineering we understand.

Kelsus Watch Co. applies fifteen years of systems discipline to mechanical watchmaking—obsessing over movement selection, case finishing, dial materials, and supply chain quality the same way we've always obsessed over the systems we build.

Movement-First Design

We select movements before we sketch cases. The Sea Gull 1903 in our Chronograph. The Sellita SW240 in our Apple Timepiece. The SW280-1 with moon phase in our Semikonductor. Each caliber chosen for reliability, serviceability, and the specific complications we need. The case, dial, and hands are designed around the movement—never the other way around.

Direct Supply Chain

Fifteen years of managing international vendor relationships across software projects taught us something: the best components come from going direct. We source movements, cases, crystals, and straps from manufacturers—no middlemen, no markup chains. The result is higher-quality materials at prices that would otherwise require cutting corners.

Serviceability Built In

Every watch we design can be serviced by any competent watchmaker. Standard movements. Standard crystal sizes. Documented case dimensions. We've seen too many products—in software and in hardware—designed to be unrepairable. Our watches are built to be maintained for decades.

First Production Run: Late 2026

Limited quantities. Waitlist members get first access to pricing, pre-order windows, and production updates. One email per milestone—we don't do newsletters.

You're on the list. We'll be in touch.

No spam. One email per major milestone. Unsubscribe anytime.