The 18-karat gold movement contains the F.P. Journe free-sprung chronometer balance. Twin barrels work in parallel to deliver stable power for much of their 50-hour power reserve (indicated). Through the display back, the balance and escapement are mysteriously detached from the movement, beating without apparent motive power. Journe has put the connecting train under the dial, leaving only the center wheel to emphasize the isolation of the balance. Inside Information: The Chronometer Souverain was awarded “Favorite Men’s Watch” at the Grand Prix d’Horlogerie de Geneve in 2005.