Portal:Anniversaries/January 25

2017 — Bulgari introduces the Octo Finissimo Tourbillon Skeleton, an open-worked version of the world's thinnest tourbillon movement.

2019 — A. Lange & Söhne adds a date complication to the Zeitwerk: Since the hours and minutes are shown in windows, the Zeitwerk Date uses a date disc around the edge of the dial.