Philippe Dufour, AHCI (born 1948) is a Swiss-born watchmaker from Le Sentier, Vallée de Joux.
[2][3][4][5][6][7][8][9] In 1992, Dufour was the first watchmaker to put arguably the most complex of complications in a wristwatch, a Sonnerie.
After finishing the order, he set out to become one of the first independent watchmakers and presented his first wristwatch in his own name in the Basel World fair in 1992.
The principle of the watch was based on the differential system that averages errors between two balance wheels.
In an interview during SIHH 2016 he stated: "Datograph is the only neutral watch I bought for myself",[22] a timepiece from A. Lange & Söhne.
In an interview with watch industry publication Hodinkee, he stated: "The best chronograph ever made is the Datograph".