Don't miss the next drop
Say Zenith to most collectors and the answer comes back El Primero, the 1969 high-frequency chronograph the brand has rightly dined out on for half a century. The Zenith Respirator X is the quieter half of that same ambition, and in our opinion it is the more wearable one. Here is Zenith applying its appetite for fast beat rates not to a stopwatch but to an everyday automatic, then doing something most makers would never bother with: printing the rate, 28800, right on the dial for anyone who cared to read it.
The Respirator was a Zenith model line that ran from the late 1960s into the 1970s across a range of shaped cases, and the X is its tonneau-cased, date-equipped version. It comes from an unusual chapter in the brand’s history. By the turn of the 1970s Zenith sat inside the MZM group, the Mondia, Zenith and Movado grouping formed when Zenith and Movado came together at the end of the 1960s, and the automatic calibers of this generation are products of exactly that period. That corporate plumbing is part of why a watch signed Zenith on the dial carries the movement architecture it does.
The automatic beneath the dial is one of Zenith’s high-beat movements of the era, running at the 28,800 vibrations per hour the dial states outright. Twenty-three jewels, a central seconds hand and a date were the standard fitment for this family, and the jump to a 4 Hz beat from the slower 21,600 of the preceding generation is the whole reason that number is on the dial at all. Across these years Zenith was pushing frequencies up wherever it could, and a date automatic running this fast was the brand bringing a little of its high-frequency engineering down into a watch you would actually wear every day. We have kept the caseback closed for these photographs, so we describe the movement from the reference rather than from a macro of the bridge.
The case is stainless steel in the tonneau shape that defines the X, roughly 31.5mm across the band with a 40mm lug-to-lug and 18mm lugs, scaled like the compact shaped watches of its decade rather than anything modern. A thick faceted acrylic crystal stands proud of the bezel and bends the light the way only period plexi does. Brushed top surfaces meet polished bevels down the flanks, and both carry honest hairlines and the occasional deeper scratch from decades on the wrist, left exactly as we found them. The snap caseback is plain brushed steel inside its polished frame, lightly marked across the face and stamped with its case number along the lower edge. The Zenith-signed crown, its four-pointed star pressed cleanly into the face, is still on duty at three.
The dial is the reason to stop. It is built in layers: an outer silver ring carrying applied yellow-gold baton markers, a recessed band of powder blue that deepens toward its edges, and a raised brushed-silver center panel that holds the signatures. ZENITH sits beneath the applied star at twelve, with automatic and 28800 stacked below, and the respirator X script tucked low on the panel. The date shows through a diamond-shaped aperture down toward five o’clock, black on a white wheel. The hour and minute hands are dark batons with a luminous channel down each, joined by a fine central seconds hand, and the foot of the dial reads SWISS MADE T, the trailing T marking the tritium correct for the period. The dial is factory original and has held its color and finish honestly, the blue still reading cool and bright against the warm gold of the markers.
We have paired it with a powder-blue Italian suede strap and an OTTUHR signed buckle, picking up the blue of the recessed dial band almost exactly. The suede softens the geometry of the tonneau case and keeps the whole thing in one tonal key, blue on blue, the sort of pairing that makes a shaped 1970s watch feel deliberate.
Serviced in-house at OTTUHR and backed by our 2-year mechanical warranty, the Zenith Respirator X is the kind of thing we bring in for the collector who reads the dial closely. High beat, honest wear, factory blue. For the buyer who would rather own the quiet half of the Zenith story than the chronograph everyone already knows, this one rewards the second look. To us, a loud watch announces itself to the room, and this one simply tells you.
