The world's oldest continuously operating watchmaker, Vacheron Constantin, has opened a pop-up space within London Jewelers' East Hampton boutique. The temporary installation, located at 2 Main St., will be open through September 6.

"At London Jewelers, we are always looking for meaningful ways to connect our clients with the world’s most exceptional brands," said Mark Udell, CEO of London Jewelers, in a statement. "Partnering with Vacheron Constantin for this exclusive Hamptons pop-up allows us to create an immersive experience that celebrates extraordinary design, timeless elegance, and the enduring legacy of one of Switzerland’s most revered watchmakers."

Vacheron Constantin, based in Geneva, Switzerland, was founded in 1755 by master watchmaker Jean-Marc Vacheron. The brand became Maison Vacheron Constantin in 1819 through a partnership with Jacques Barthélémi Vacheron and François Constantin. The Maltese cross has served as its emblem since 1880.

The brand is known for its complex mechanical innovations, craftsmanship, and refined style. Celebrities and historical figures who have worn Vacheron Constantin timepieces include Princess Diana, Harry Truman, Brad Pitt, LeBron James, Tom Cruise, Edward Norton, and Jennifer Garner. Princess Diana received a Vacheron Constantin diamond cocktail watch from Queen Elizabeth II as a wedding gift in 1981.

The pop-up is situated on the third floor of the London Jewelers boutique. It is open Thursday through Saturday from 10 a.m. to 5 p.m., and Sunday from noon to 5 p.m. Appointments are recommended.