An idea that deserves another turn.
Single-crown internal-bezel watches appeared in the 1960s, but the dual-crown layout stuck. We picked the single-crown idea back up and finished the job with modern machining.
Try the crownPatent pending.
Two ways to use the bezel
Align the arrow with the minute hand to read elapsed minutes, up to one hour. If you overshoot, continue around.
Offset the bezel by the hour difference; the hour hand reads both time zones.
Align the arrow with the minute hand to read elapsed minutes, up to one hour. If you overshoot, continue around.
Crown controls
This demonstration uses the date model. No-date watches have winding, bezel control and time setting, with no date-setting position.
Swipe across the watch to turn the crown. Choose a crown position below.
Clockwise hand-winds the movement. Anticlockwise advances the bezel a click at a time.
Time 10:08. Date 1. Bezel 000 of 120. Illustrative winding level 65 percent.
Inside Unicrown
The clutch wraps the crown stem and selects winding or bezel control by the direction of rotation. The one-way bezel indexes in 120 clicks. A spring-loaded ball and click mechanism locks the bezel in position.