Seamaster 300 CK2913 — CK2913-3

Omega 500

Full-rotorRotorAn oscillating weight that uses wrist movement to wind an automatic watch’s mainspring. automaticAutomaticA mechanical movement wound by a rotor as the watch moves on the wrist. of the 50x family that replaced Omega's bumper movementsBumper 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. in the mid-1950s; found in the Seamaster 300 CK2913 alongside the 501.

Automatic · 19,800 vph · 46 h reserve