Royal Oak 14789 — 14789BA

Audemars Piguet 2120

Ultra-thin automaticAutomaticA mechanical movement wound by a rotor as the watch moves on the wrist. without date, built on a LeCoultre & Cie calibreCaliberThe designation of a watch movement, identifying its design or movement family. 920 ébaucheÉbaucheAn incomplete movement supplied for further work before it becomes a finished watch mechanism. The parts included in an ébauche have varied by period and supplier; the term does not by itself specify a complete, assembled movement.; the rotorAn oscillating weight that uses wrist movement to wind an automatic watch’s mainspring. runs on ruby rollers along a rail at the edge. Basis of the 2121 and of the 2120/2800 , and openworked as the 2120SQ from 1973.