Limited to 28 pieces worldwide.
The Tourbillon is the most emblematic watch complication in existence.
It compensates for the effects of gravity to improve the functioning of a timepiece. 
Roger Dubuis has taken on a pioneering role by developing a double Tourbillon with differential for even greater reliability. 
This horological trapeze act ensures optimal performance.
Black, white Roman numerals, rhodium-plated, engraved Arabic numerals and retrograde minute-circle
White gold appliques and double Tourbillon ring - manual wind Caliber RD01 - with 48 hour power reserve 
Power reserve indicator on the caseback
Water resistant to 50 meters / 165 feet