Mainly crafted from 950 platinum, the Vacheron Constantin Traditionnelle Split Seconds Chrono Ultra-Thin Collection Excellence Platine reference 5400T/000P-B637 is released in an individually numbered 15-piece limited series. Through its blend of elegant design and technical excellence, the Traditionnelle collection embodies the spirit of haute horlogerie cherished by Vacheron Constantin. Combining the refinement of its style, the prestige of platinum and the performance of in-house calibre 3500, the new model Traditionnelle split-seconds chronograph ultra-thin Collection Excellence Platine immediately finds its natural place at the very pinnacle of this watch line.

Highly appreciated by collectors, the Collection Excellence Platine is exclusively composed of limited editions crafted from 950 platinum: case, bezel, dial, crown and folding clasp are forged in this noble metal, right the way through to the alligator leather strap sewn using woven platinum and silk thread. The other elements of the watch, such as the 18K white gold hands and hour-markers, reflect the same refined universe. While the 42.5 mm diameter case ensures the watch radiates an assertive presence on the wrist, its pure lines and very sober dial lend it an aura of unmistakable distinction.

To power this split-seconds chronograph, Vacheron Constantin has chosen calibre 3500, a movement launched in 2015 to mark the 260th anniversary of the Manufacture. Its distinctive design makes this ultra-thin self-winding movement one of the thinnest for this type of complication —5.2 mm—, enabling the watch to maintain a modest overall thickness of just 10.72 mm. The creation of an extremely thin non-spherical differential made it possible to retain the power-reserve indication without affecting the movement thickness. This automatic movement is also equipped with a 22K gold peripheral oscillating weight, adorned with motifs inspired by the Maltese cross. Mounted on ball bearings, this unusual construction provides a perfectly clear view of Caliber 3500, entirely hand decorated. This peripheral structure also serves to preserve its exceptional slimness.

The use of a split-seconds chronograph is ideal for measuring two different times. When the crown is pressed, the center sweep-seconds hand and the split-seconds hand began running while remaining superimposed. Activating the push-piece at 2 o'clock makes the split-seconds stop, while the sweep-seconds hand continues running. A first time can thus be memorized. Another press on the 2 o’clock push-piece enables the split-seconds hand to catch up with and once again place it itself over the seconds hand. The operation may be repeated as many times as necessary to ensure several successive timings during the same event.

The Vacheron Constantin Traditionnelle Split Seconds Chrono Ultra-Thin Collection Excellence Platine is delivered on a dark blue Mississippiensis alligator leather with alligator leather inner shell, hand-stitched with 950 platinum and silk, saddle-finish, large square scales. The watch is exclusively sold at the Vacheron Constantin boutiques worldwide.

Sticker Price $287,000 USD. For more info on Vacheron Constantin click here.