TAG Heuer Calibre 5

TAG Heuer's Calibre 5 is an automatic movement based on either the ETA 2824-2 (25 jewels) or Sellita SW200-1 (26 jewels) depending on the production year. It's one of TAG Heuer's most widely used movements, found in Aquaracer, Link, and Carrera models. Most versions feature Côtes de Genève decoration on the rotor. Some high-grade variations are COSC certified. The easiest way to identify which base movement is inside is by checking the jewel count: 25 jewels indicates ETA, 26 jewels indicates Sellita.