TAG Heuer CALIBRE-5-ISOGRAPH

The TAG Heuer Calibre 5 Isograph is an automatic chronometer movement introduced in 2019, based on the ETA 2824-2. It contains 25 or 26 jewels and features a proprietary carbon-composite hairspring paired with an aluminium alloy balance wheel, offering both shock resistance and complete antimagnetic properties. TAG Heuer manufactures the movement in-house at its laboratory in La Chaux-de-Fonds, Switzerland. The Isograph name refers to the hairspring's stable and consistent movement. The movement powers several TAG Heuer collections.