tag heuer 2000 professional 570 206 chronographOne of the first professional watches water resistant to 200 meters, this 3 resistor chronograph was introduced in 1983, just before the merger of TAG and Heuer. Named the "2000 Series", it has the six major functions* that form the basis of TAG Heuer sports watches. *6 major features: water resistance to 200m, screw in crown, unidirectional rotating bezel, sapphire crystal, luminescent hands, hour markers, double safety clasp. This 570. 206 is a