The TAG Heuer Monaco was the world’s first square automatic chronograph and the first-ever square water resistant case to be created. This TAG Heuer Monaco Automatic Chronograph men’s watch is powered by the brand’s Calibre 11 movement. Two square counters on the blue dial at 3 and 9 o’clock measure small seconds and chronograph minutes. The striking Monaco is finished with a stainless steel case, presented on a black leather strap.