ZF Audemars Piguet Royal Oak 15600 Music Classic Version [6 Subtleties] 1. The authentic model is disassembled, 44mm in diameter and 14mm thick 2. Every detail of the authentic case is perfectly restored, showing the masculine temperament of the authentic "angular, resolute and courageous" .3. The workmanship of imported fluorine rubber is impeccable. It is stain-resistant, wear-resistant and not easy to crack. 4. The automatic rotor pays tribute to the original. It is the only version on the market that has the same color as the original. The A-family emblem on it is uniquely carved. 5. CAL. 4309 machine! More stable, better, and more real. 6. The "music texture" of the dial is three-dimensional and full, and the super luminous light makes the experience exquisite and feels different! ,