Unveiled as a Concept Watch at BaselWorld 2004, the TAG Heuer MONACO V4, twice patented, is the first watch in the world to feature optimized mechanical transmission belts and a linear winding system.

Its bold design is inspired by the legendary Monaco, oversized and square, was first seen on Steve McQueen's wrist in the 1970 film Le Mans. When it was first released in 1969, this iconic TAG Heuer watch was the first chronograph in the world to feature a square case and a left-mounted crown.