Girard-Perregaux Free Bridge Infinity

Once again, Girard-Perregaux has capitalised on silicon’s ability to be formed into intricate shapes, using the state-of- the-art material to create not only the escapement but also a large variable inertia balance. Most watches feature a ‘raquette’ which alters the effective length of the balance spring, making the watch run faster or slower. With a variable inertia balance, the length of the balance spring is fixed and the rate is altered by moving adjustable inertia blocks. The benefit of this approach is that the balance is more stable and less susceptible to shocks. Its aerial design as well as its large diameter further augment precision.