This watch features an automatic movement with a double power-reserve and date hand. Each barrel has its own hand, one indicating a maximum power reserve of 25.5 hours, the other 13.3 hours. With the two different-sized barrels working in series, their moments of force are constantly equalised in proportion to their speed of rotation. Each movement is individually numbered. The chronograph’s stainless steel case, which has a screw. down crown, is fitted with a spherical scratch-resistant sapphire crystal and is water-resistant to 50 m. The movement can be admired through a transparent back. The timepiece is also available with a hand-winding chronograph, or an automatic movement with an official chronometer certificate (COSC).