The Double Tourbillon 30° Vision features an open dial allowing the invention to be viewed and appreciated to the full.
In order to respond to the specific requirements of the tourbillon in a wristwatch, Greubel Forsey developed this groundbreaking double tourbillon, with one 60-second carriage rotating inside another carriage rotating every four minutes.
In this world premier construction, the double tourbillons average out gravity-induced errors on the balance. The construction allows for superior chronometric performance; a minimum volume/maximum balance diameter ratio; and enables the superbly finished mechanism to be fully appreciated.