The Monaco V4 was introduced in 2004 at the BaselWorld watch trade show.
The V4 is belt driven and uses ball bearings for mechanisms rather than the traditional wheels and pinions.

The mechanism was inspired by the movement of an automobile engine.
Designed by Jean-François Ruchonnet with the help of independent master watchmaker Philippe Dufour, the watch is powered by four barrels storing 375 g of energy each, that is visible through the back.
The Monaco V4 was introduced in 2004 at the BaselWorld watch trade show. The V4 is belt driven and uses ball bearings for mechanisms rather than the traditional wheels and pinions.
The mechanism was inspired by the movement of an automobile engine. Designed by Jean-François Ruchonnet with the help of independent master watchmaker Philippe Dufour, the watch is powered by four barrels storing 375 g of energy each, that is visible through the back.
TAG Heuer Monaco