TAG Heuer caliber TH20-02

The TAG Heuer Calibre TH20-02 is an automatic chronograph GMT movement developed and manufactured by TAG Heuer. Based on the architecture of the TH20 family, it combines a column wheel and vertical clutch for precise and reliable chronograph engagement, while adding an independently adjustable 24-hour hand for a second time zone display. The movement beats at a frequency of 28,800 vibrations per hour (4 Hz) and offers a power reserve of approximately 80 hours from a single barrel. It features bidirectional winding via a shield-shaped rotor for efficient energy transfer. Functions include hours, minutes, seconds, date, chronograph, and GMT. Finishing includes brushed and matte surfaces with rhodium-plated and blackened components, visible through a sapphire crystal case back.