Unworn New Patek Philippe Split Seconds Chronograph / 5370P-001

Manually wound mechanical movement. Caliber CHR 29-535 PS. Seconds subdial. Tachymeter scale. Glossy authentic black enamel, gold applied Breguet numerals. 18K gold dial plates. Platinum case41mm, Interchangeable full back and sapphire-crystal case back. Water resistant to 30 m. Alligator strap, hand-stitched, shiny black. Platinium deployant buckle with Patek Logo. Box & Cert Dated Dec 2018.

The split-seconds chronograph is one of the three most difficult complications to master, alongside the tourbillon and the minute repeater. It takes a highly sophisticated mechanism to control the two chronograph hands, one of which may be stopped to measure an intermediate or lap time or retain a reference time while the other continues its course unaffected, even by fractions of a second. When released again, the split-seconds hand instantly catches up with the primary hand and the two stacked hands move on together.