Constellation 2782

Bumper-movementBumper automaticAn automatic winding system whose pivoting weight travels through a limited arc, meeting spring buffers at the ends of its swing. Wrist motion moves the weight to wind the mainspring. Unlike a full-rotation rotor, the weight cannot turn continuously through 360 degrees; the travel angle varies by design. Constellation recorded with caliberCaliberThe designation of a watch movement, identifying its design or movement family. 354.