From concept to reality...
The evolution of the v4 revolution
In 2004, tag heuer changed the course of watchmaking by unveiling the monaco v4 concept watch, the world’s first watch with patented belt drives, linear mass and ball bearings.
The v4 name derived from the v-shaped platinum main plate on which the movement’s four barrels are mounted. this concept watch represented nothing short of a complete rewriting of the fundamental principles of mechanical watchmaking, housed inside another revolution, the audacious square-faced monaco.
In 2014, building on its top-secret development of transmission belts no thicker than a single hair, tag heuer takes its avant-garde creation to the next level—juxtaposing its patented belt technology with one of the most emblematic complication of watchmaking—the tourbillon.
When avant-garde haute-horlogerie meets tradition
A tourbillon driven by belts, a world first
By far the most intricate and iconic complication of haute horlogerie, a tourbillon is a mechanical system for regulating the speed at which a watch beats. traditionally, it overcomes the effects of gravity by placing the balance wheel and escapement inside a rotating cage.
The monaco v4 tourbillon brings this complication further, by using, in a world first, a micro-belt to drive the tourbillon. thanks to the belt driving the tourbillon, its rotation is absolutely fluid.