The Tag Heuer Monaco Evergraph rethinks the complication with a compliant chronograph mechanism
Tag Heuer has rewritten the rules on the chronograph with the introduction of the compliant chronograph mechanism, a true breakthrough that reimagines the operation of the stopwatch function. For a long time, the chronograph has relied on an army of levers and springs to start, stop and reset. As ingenious as they are, they are also incredibly fragile.
Tag Heuer has boldly replaced them with two flexible, bistable components—one to start/stop, and the other to reset. Produced using high-precision LIGA technology, think of it like a high-tech hairpin that snaps between two stable positions, without the usual friction or wear. Performance is thus steady throughout the chronograph operation, whether you’re pressing the pushers for the first time or the one-hundredth time.

Above Tag Heuer Monaco Evergraph in black DLC-coated titanium with red accents
A collaborative effort between Tag Heuer LAB and Vaucher, the COSC-certified Calibre TH80-00 features an inverted open-worked construction, with the essential components visible on the dial, including the balance and escapement in magnetic-resistant TH-Carbonspring.
The new chronograph movement debuts in the Monaco, a watch synonymous with motor racing. Its ergonomic silhouette recalls the 1969 original but is refined for today. The case is Grade 5 titanium with the crown positioned on the left side and new elongated pushers on the right.

Above Calibre TH80-00 marks the debut of the groundbreaking compliant chronograph mechanism
The Monaco Evergraph is available in titanium with blue counters and black DLC-coated titanium with red accents.
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