Opposed dial apertures and a single driven display ring show Moon and Earth phases together with simpler watch kinematics.
A one-way inner rotating ring uses separated engagement, restriction, and biasing parts to keep click feel while reducing load concentration.
A micro-generator powers LEDs directly to keep a timepiece rotating mobile within a narrow speed range without bulky visible electronics.
Colored ball segments moving through a fixed bed make time or other values readable at a glance in thin mechanical watches.
Galvanic metal growth forms blocking elements on a conductive support, securing fragile insulating holding members without gluing or precise positioning.
A multiplication-ratio gear train and indexing wheel improve maximum pressure reading resolution in a compact timepiece mechanism.
Internal anchors on an SOI wafer hold silicon balance springs off the outer profile, enabling clean edges plus rear-face decoration and treatment.
Multiple daily jumps split the moon phase advance into smaller steps, improving display precision without costly complex gearing.
Separated display and finishing trains let a sympatique watch reset and index time accurately at any moment without uncertain restart.
A differential gear train varies tourbillon speed and direction while keeping the finishing gear at constant speed for normal time display.
A differential combining constant- and variable-speed shafts lets a watch mechanism vary tourbillon speed or direction without disturbing time display.
Radial elastic arms and a shock bearing clearance improve watch indexing precision, reduce thickness, and limit stress variation.