Explore Buren

Buren’s most interesting watches reveal their character from the side: slim cases housing automatics built around a small, recessed winding rotor. Founded in Switzerland in 1898, the firm became particularly important to the pursuit of thinner automatic movements in the mid-twentieth century. Its contribution was mechanical ingenuity rather than an immediately recognizable case shape.

The Super Slender and Intramatic names are central to that story. Their micro-rotor movements placed the winding mass within the movement’s layout, rather than above it as a full-size rotor would sit. On the wrist, the result is often restrained: narrow bezels, simple hour markers, and dials that give little away about the engineering underneath.

Hamilton acquired Buren in 1966, and Buren’s movement expertise subsequently helped underpin the Caliber 11 automatic chronograph project, introduced in 1969 with Heuer, Breitling, and Dubois Dépraz. Here the thin automatic base served a different purpose, carrying a chronograph module. The arrangement produced one of the period’s distinctive signatures: a winding crown on the left, pushers on the right.