180 years ago, Antoine LeCoultre embarked on one of the most significant adventures in the history of watchmaking. As a tribute to its inventor, the Swiss Manufacturer has created a collection of three watches, one of which is the Master Ultra Thin Jubilee, the thinnest and flattest handwound mechanical watch in existence. With a case thickness of just 4.05mm, this timepiece has set a new record. Its perfectly circular shape mirrors the simple, classic design inspired by the ultra-flat pocket watch launched by the manufacturer in 1907: the inspirational creativity of the founder of this cradle of fine Swiss watchmaking lives on today in this new creation.