Ingenieur SL Automatic 3506 — Steel, Black Dial

IWC 375

IWC calibreCaliberThe designation of a watch movement, identifying its design or movement family. family based on the ETA 2892 (to 1984) and 2892-A (1985–89), with ball-bearing rotorRotorAn oscillating weight that uses wrist movement to wind an automatic watch’s mainspring.. Powers the 34 mm Ingenieur SL AutomaticAutomaticA mechanical movement wound by a rotor as the watch moves on the wrist.; individual lots record 3753 and 3758.

Automatic · Introduced 1983 · 28,800 vph · 42 h reserve