The v2 version of Cartier CARTIER AP8 produced by SJ 1. The color of the tourbillon is white electroplating, which is the same as the original version 2. The guest set is about 1mm thinner than the first generation Cartier double mysterious suspended tourbillon. Cartier watchmakers use a sapphire crystal disc with anti-glare treatment, and A hole the same size as the tourbillon was dug in it, thus perfectly creating the illusion that the tourbillon frame is suspended. To achieve this illusion, they rotated the disc supporting the frame, and then placed the minute wheel that drives the oscillator. On the rotating axis, this axis is used to limit the inherent "resistance torque" of the mechanical device supporting the tourbillon, thereby successfully transmitting power to the tourbillon and enabling the entire device to complete a suspended rotation every minute. Therefore, when the tourbillon While completing one rotation every minute in the transparent open space, its frame performs one complete rotation. The secret to achieving this is to set a set of gear rails around the edge of the sapphire crystal disc, connecting the disc to On a large gear that runs one week every 1 minute. This "magic watch" is equipped with a refined manual winding mechanical movement by an independent watchmaker. It is the culmination of long-term research and development by the watchmaker. For example, the determination of each moving part The rotation speed needs to be calculated countless times. In order to minimize energy consumption, the tourbillon frame completes a complete rotation in its specific space every 1 minute. In order to improve the efficiency of this mobile device, the weight of each component of the movement is reduced to a minimum, thereby better controlling the inertia of the rotating components including the disc and titanium tourbillon frame. Although the weight of the "suspended" frame has been reduced to a minimum (0.28 grams), in order to compensate for the speed regulation mechanism and the The weight of the frame, part of the circular frame used to mesh the gears, is made of K gold and is installed opposite the tourbillon so that the weight on both sides is equal, thus creating a dynamic balance effect. Rotonde Tourbillon Mysterieux Double Mystery Tourbillon Watch Technical parameters of the watch Case 904 stainless steel 45mm diameter Crown Platinum bead-shaped crown set with a convex natural spinel Mirror Sapphire crystal Case back Sapphire crystal Transparent case back Water-resistant to 30 meters / feet / 3 bar Dial: Dark gray electroplated engraved dial, silver-plated hollow grille with sunray effect, black transferred Roman numeral hour markers, sword-shaped blue steel pointers, strap, Italian imported calfskin strap, buckle, original stainless steel folding clasp machine Cartier 9454 MC workshop-refined hand-wound mechanical movement, engraved with the "Geneva Seal of Quality", equipped with a double mystery tourbillon with 25 ruby bearings, 242 movement parts, a balance wheel vibration frequency of 21 per hour, and a power reserve of 42 hours per hour. Each watch is independently coded. If you book in advance, you can choose your favorite lucky number. S1 exquisitely recommends men’s true flywheel mechanical watch.