All TAG Heuer automatic movements are made in Switzerland and must meet extremely strict criteria for precision before they make it onto your wrist. Their high frequency ensures excellent mechanical precision. A number of TAG Heuer automatic movements are awarded an Official Swiss Chronometer Control (C.O.S.C.) Certificate, the ultimate recognition of precision and reliability.
TAG Heuer Calibre 18, Swiss Made. Automatic calibre.
Diameter: 28.0 mm (12 ½''') 37 rubies. Rapide date correction.
Balance frequency: 28,000 vibrations per hour (4Hz).
Power reserve: about 40 hours.
Hours minutes small seconds at 3. Chronograph minutes at 9. Chronograph central second. Date window.
Oscillating mass: « Côtes de Genève » engraved « TAG Heuer Calibre 18 . Swiss Made ».