The Respirator was one of the rare square watches to be water resistant, relying on a similar construction found in the Heuer Monaco. This Luxe version offered for sale is powered by a high-beat (28,800/bph) cal. 2542 PC automatic movement, in perfect running condition.
The 2542 PC has 23 jewels, a 48 hour power reserve, and beats at 28,800/bph. It features a screwless Glucydur balance and fine regulator adjustment by eccentric screw. It winds on ball bearings via a click-wheel switcher on the crown wheel.
The Respirator was one of Zenith's iconic lines in the late1960s and early 1970s with its recognizable square shape. Connoisseurs will find a similarity with the Heuer Monaco as they share the same case construction, as both cases were manufactured by Ervin Piquerez SA.