Richard Mille's tourbillon flyback chronograph RM 039 Aviation E6-B takes pilot's watches to new heights. The brand is well-known for its use of grade 5 titanium, an alloy made of 90% titanium, 6% aluminium and 4% vanadium, which makes it incredibly corrosion-resistant but rigid at the same time - ideal for aerospace, aeronautical and automobile use. The baseplate of the RM 039 is finished in this super alloy, and the 30-piece limited edition watch is powered by Calibre RM 039, a manuel winding tourbillon movement with countdown mode, function selector and power reserve indicator. Just start or stop the chronograph with the pusher at 10. You can reset to zero by pushing the button at 8. And if you push the button at 9, it will activate the minutes hand's countdown function.