Double BalancierReference# Double Balancier RG Black
- Case: 18-karat rose gold
- Size: 43mm
- Movement: hand-wound manufacture caliber
- Function: power reserve, dual inclined balance wheels
- Power Reserve: approximately 72 hours
- Water Resistance: 30m
- Dial: black with engraved and oven-fired enameled indexes
- Caseback: sapphire crystal
- Hands: luminous
- Strap/Bracelet: hand-sewn alligator leather
- Factory Warranty: three years
Stemming from fundamental research into the inclination of oscillators and escapements, the Double Balancier offers a significant approach to improve chronometric timing performance for the timepiece, both on and off the wrist.
A movement with two oscillators inclined in different three-dimensional planes offers two notable factors in the pursuit for improved chronometric performance. Firstly, the inclined oscillators act in stabilized positions to significantly reduce the possibility to be in either a horizontal (flat) or vertical position. The second is that the two inclined fixed oscillators are linked by a spherical differential that averages rating differences and ensures an optimal performance at all times whether in stabilized (horizontal or vertical) positions or dynamically (on the wrist).
As with all Greubel Forsey timepieces, the level of hand-finishing and decoration throughout the Double Balancier is without compromise. Movement components are designed with forms that bring out their beauty to maximum effect, offering myriad sublime details to be discovered and esteemed.