The idea,
finished.
Single-crown internal bezel systems promised clarity decades ago. The idea was right. The execution wasn’t. Unicrown finishes the job with modern machining tolerances.
Read the full history →How It Works
Our Unicrown clutch wraps the crown stem. Winding and bezel share the crown-in position, split by direction. Date and time have their own. The uni-directional bezel indexes in 120 clicks.
Set the arrow to the minute hand; the scale counts up to an hour.
Offset the bezel by the hour difference; the hour hand reads both time zones.
Complete control.
Drag sideways to turn the crown.
Chapter 1 is not a simple watch. A gear train, a click spring and a one-way ratchet sit inside the crown, doing the work of a second crown. The complexity is integrated, so the appearance stays clean and simple.
Patent pending.
Application CN2025108245077
Every super compressor style internal-bezel watch in production uses two crowns. The C1 uses one. The Unicrown: a layered clutch that gives one crown every function.