Zenith Defy Lab
Touted as the world’s most accurate mechanical watch, the Defy Lab is the first watch with a 44mm case made from Aeronith, the world’s lightest aluminium composite material. This new material resembling an extremely solid metal foam was developed using an exclusive high-tech process and is 2.7 times lighter than titanium, 1.7 times lighter than aluminium and 10% lighter than carbon fibre. A new oscillator forming a monolithic whole, made of monocrystalline silicon replaces the sprung balance. The 30 or so components of a standard regulating organ are thus replaced by a single element measuring just 0.5 mm thick and beats at the incredible frequency of 15 Hertz and is endowed with an almost 60 hour power reserve. This frequency endows it with an exceptional degree of accuracy and its mean daily rate is precise to within just 0.3 seconds. Moreover, it remains accurate far beyond 24 hours of operation, the moment when mechanical watches begin to lose their energy and thus their accuracy. This new oscillator maintains the same degree of precision for 95% of its power reserve. With no need for oil, no more contact means no more friction or wear, and thus no need for lubrication.