Historically, aeronautics and the aerospace industry were the first to use titanium. It goes into the making of most aircraft in the form of forged parts. While military equipment manufacturers see it as an essential component of modern armour-plating, medicine and surgery have leveraged its salutary potential in developing artificial limbs, joints and implants. Lightness is one of its key virtues. Titanium boasts a density 40% lower than that of steel, combined with excellent resistance to mechanical stress, fire and corrosion.  Better still, titanium is biocompatible, as are gold and platinum.
 

The case and dial of the two reference watches in the Octo line are made from this metal. The three-hand version is equipped with a mechanical self-winding movement, Calibre BVL 191 Solotempo, driving the hours, minutes, seconds and date functions. It has a 42-hour power reserve. The chronograph is powered by the high-frequency mechanical self-winding BVL 328 Velocissimo movement.

This column-wheel chronograph with a silicon escapement has a 50-hour power reserve.