[FRANCK MULLER Watches] Frank Muller Pioneer Series Integrated Tourbillon 1. True tourbillon movement customized with heavy money The successful birth of this tourbillon breaks through the blockade of Swiss watchmaking technology You can clearly appreciate the beauty of the tourbillon operation with the naked eye Very visually ornamental Challenging the limits of watchmaking technology again The hollow bridge is carefully designed to accentuate the structure of the watch Wire drawing 3. The mirror surface is made of a whole piece of 35.6 mm 40.6 mm bridge sapphire glass 4. The strap is made of rubber sole Italian cowhide on top layer Excellent wearing comfort 5. The buckle uses the same folding buckle as the original Not the ordinary folding buckle on the market The fold buckle is both in appearance and in size All meet the original requirements With the structural lines of its watch movement Making VanguardSkeleton a Masterpiece of Contemporary Watches