Patek Philippe Complications 5172

Patek Philippe's Complications 5172G-010 is a 41 mm chronograph in white gold. The case measures 11.45 mm thick and pairs vintage-style three-tier lugs with a sapphire crystal, both front and back. Inside is the manual-winding calibre CH 29-535 PS, Patek's first in-house chronograph movement, built with a column wheel and horizontal clutch. The pink guilloché dial carries a tachymeter scale and small seconds, with luminous numerals and hands for legibility in low light. A folding clasp in white gold closes the alligator leather strap, stitched with square scales. The display back shows the movement's finishing. Water resistance is modest at 30 metres, in keeping with the dress-watch proportions of the case.