Caliber 1863 Speedmaster Professional 3572.50
At 130g, the titanium is actually comfortable to wear; that's only slightly more than my titanium IWC Aquatimer, which is 120g on its bracelet.
According to Maitres du Temps, Kari Voutilianen is responsible for the design of the movement in the Chapter Three watch. This includes its architecture, decoration, and also the finishing. Andreas Strehler on the other hand worked to have the movement interface with the watch case and worked on the function of the complications (such as the reveal feature). While the Maitres du Temps Chapter Three comes in a classic skin, it is nevertheless a unique product in the high-end world of independent watch making. Price of the Chapter Three Reveal is ,500 in 18k red gold and ,000 in 18k white gold.