Autonomy, measured in years.

A motor and gearbox bring a weighted cup up to speed; at threshold the drive disengages and the cup freewheels — swinging under gravity as on the wrist.

The Mechanism

A motor, a gearbox, a weighted cup.

A DC motor and gearbox bring a weighted winding cup up to speed. At threshold, the drive disengages and the cup freewheels — decelerating under inertia, swinging to rest under gravity. The watch experiences the natural, uneven arc of a wrist.

iDriveBrushless DC motor and gearbox, engaged in short intervals
iiReleaseDrive disengages at threshold; cup freewheels under gravity
iiiAutonomyThree to five years on lithium cells — against roughly one year for the battery-powered competition
ivAcoustic signatureEffectively nil — freewheeling is silent

Rotorwind in application — Avanti 6 — Avanti 6 · Rotorwind

3–5 Years

Single-winder lithium battery autonomy

650–800

Turns per day, preset by movement

Weighted Cup

Freewheels after drive cycle

Sparta 1 Deluxe — Rotorwind — Sparta 1 Deluxe · Single module

By Comparison

Why Rotorwind behaves differently.

	Consumer winder	Rotorwind
Drive	Continuous AC motor, direct	DC motor + gearbox, intermittent
Duty cycle	Always driven	Brief drive; freewheel & gravity
Battery life	~1 year typical (alkaline)	3–5 years on lithium cells
Noise	Audible motor + gearing	Silent during freewheel
Service life	18–24 months typical	Measured in decades

The Catalogue

Winders featuring Rotorwind.

From the Sparta 1, a single-module study in proportion, to the Wallsafe 9 and its architectural scale — each winder below is available with the Rotorwind mechanism.