"Duomètre Sphérotourbillon, the tourbillon enters the third dimension" by Jaeger-LeCoultre

In developing the Duomètre Sphérotourbillon, the first tourbillon watch accurate to the nearest second. Thanks to the Dual-Wing concept combined with the flyback function, the watchmakers at Jaeger-LeCoultre gave rise to one of the most exceptional watch models of the 21st century and one of the most sought-after among collectors...