RB21203A1Q1P1Ref

Debuting in 2025 as a 10-piece limited edition for Japan, the Premier B21 Chronograph Tourbillon 42 (RB21203A1Q1P1) highlights the collection's technical sophistication with an 18k red gold 42mm case and a komurasaki purple dial. Powered by the automatic Caliber B21, developed with La Joux-Perret, the watch features a column-wheel chronograph and a tourbillon with a 55-hour power reserve. This exclusive timepiece is water-resistant to 100 meters and presented on a brown alligator strap.