The Patek Philippe reference 5370 is widely regarded as one of the finest modern split-seconds chronographs ever produced, showcasing the manufacture's mastery of one of watchmaking's most demanding complications. Introduced in 2015, it is powered by the manually wound in-house Calibre CHR 29-535 PS, a movement developed specifically for the split-seconds chronograph and incorporating numerous patented innovations to improve precision, reliability and efficiency. Featuring a traditional column wheel and horizontal clutch, the movement exemplifies classical chronograph construction while benefiting from modern engineering, making the 5370 a benchmark for contemporary haute horlogerie.

Housed in a beautifully proportioned platinum case, the reference 5370 is distinguished by its flawless black grand feu enamel dial, applied Breguet numerals and elegantly sculpted feuille hands. Every component of the movement is meticulously hand-finished, from the polished steel chronograph levers to the chamfered bridges and Geneva stripes, while the split-seconds mechanism can be admired through the sapphire crystal case back. The combination of traditional craftsmanship and technical sophistication reflects Patek Philippe's philosophy that exceptional complications should be matched by timeless design and uncompromising finishing.

The 5370 occupies a unique position within Patek Philippe's Grand Complications collection as the pure expression of the split-seconds chronograph. Together with its sibling, the reference 5374, it represents the modern evolution of one of the manufacture's most prestigious chronograph complications. Today, the 5370 is admired by collectors as one of the greatest manually wound chronographs of the twenty-first century, combining exceptional mechanical complexity, understated elegance and the highest standards of Genevan watchmaking in a timepiece destined to become a future classic.