Abraham-Louis Breguet (1747-1823) was a seminal watchmaker whose influence in horology has endured for centuries, having created so many watchmaking inventions still in use in the present day. These include the “perpétuelle” or self-winding watches, “pare-chute” shock protection, gong-based minute repeaters, and the tourbillon. He was an honoured master, and so influential in society during his day, he associated with European royalty, the elite in the sciences, military, and diplomats. His creativity and ingenuity he are still a vital and driving force in the modern Breguet firm today, and their Hora Mundi World-Time wristwatch is a stellar example of the technical mastery the brand strives to achieve.