TAG Heuer Isograph

TAG Heuer's Isograph movement is based on the Calibre 5 but features an innovative carbon composite hairspring developed in-house. The 'Isograph' name refers to this revolutionary hairspring technology that offers superior resistance to magnetic fields, temperature variations, and shocks compared to traditional metal hairsprings. The carbon composite hairspring maintains its shape and elasticity under extreme conditions, providing more consistent timekeeping. Introduced at Baselworld 2019 in the Autavia Isograph collection, this represents TAG Heuer's advancement in materials science applied to traditional watchmaking.