YS Dubie King series double flying tourbillon V2 upgrade version, equipped with two flying real tourbillon stable operation, (model: white shell white face RDDBEX0250, gold shell white face RDDBEX0249, white shell black face RDDBEX0291, gold shell black face RDDBEX0280). Full copy of the original data open case and literal, internal and external repair, movement structure and external reduction of more than 95%, this is another historical moment in the field of duplicate engraving, set up RD01 tourbillon manual chain plate, each movement has to go through dozens of simulation QE tests and hundreds of debugging until stable and qualified, static manual chain can be about 80 rounds. The diameter has been upgraded from 47 to the original 45mm, and the two tourbillons rotate at a uniform speed, elegant and moving, satisfying your senses, striking others' eyes, and overcoming the obstacles of gravity to the maximum extent, and traveling with unparalleled accuracy. Positive and negative sapphire crystal glass, with real American crocodile skin, original RD folding buckle, back clone Roger Dubi signature. The pinnacle, unique and rare, Roger Dubuis double Tourbillon is worth collecting for watch lovers.