Introducing The Moser Endeavour Flybaback Chronograph Dual Time Date

The latest chronograph from H. Moser & Cie is a complicated watch, but in keeping with Moser’s philosophy of combining complexity with a minimalist design language, it’s also a clean, uncluttered design, using a combination of a muted, close toned palette with an arrangement of the various indications, which makes good use of negative space. Some of Moser’s more recent introductions, like the 2025 Concept Pop collection, have been unabashed exercises in saturated, vibrant color; and of course this year one of its talking pieces was on the whimsically fun side – the Streamliner Pump, which is a collaboration with Reebok.

The Moser Endeavour Flyback Chronograph Dual Time Date, on the other hand, feels right away like a serious and sober exercise in technically advanced fine watchmaking.

The Flyback Chronograph Dual Time Date is a 42mm x 13.2mm steel-cased wristwatch, hand-wound, in a bullhead configuration, with pushers at ten and two o’clock. There’s a tachymeter scale on the rehaut, and all four hands are mounted on the same central axis, with the chronograph seconds hand in red, and rhodium plating for the instantaneous jumping minute hand. The dual time indication consists of a single elongated triangle of Super-LumiNova, mounted on a rotating central disk, and the date display is in a small, bell-shaped window at six o’clock, which helps preserve the symmetry of the overall design, and which subtly echoes the shape of the crown at 4:00, which pretty much the only asymmetrical element in the entire design.

The watch is not, strictly speaking, a GMT watch as the dual time indication is a 12 hour indication, not a 24 hour (like the classic Patek Dual Time). Normally the hour hand conceals the dual time indicator, but when the hour hand is set during travel to local time, you can see both home and local time together.

The date can be quickset forwards or backwards as well and while the watch might be slightly more useful for travel with a day/night indicator for home time, I don’t think you’d really miss it – and its absence helps keep the overall design clean as well.

The movement is caliber HMC 730, which is the latest variation on the Agengraphe chronograph caliber used by Moser. The movement is a highly unusual modern chronograph movement, with some very sophisticated mechanical solutions, especially involving the lateral clutch, and the return to zero mechanism. The movement is column wheel controlled as you can see from the above image, and it does have a lateral clutch, but the clutch driving and intermediate wheels don’t have conventional gear teeth. Instead, they have a nickel coating on their edges, which is covered with a very thin (three micron) layer of diamond dust, which provides enough friction for reliable engagement.

If the watch should receive a shock, which might cause the clutch and intermediate wheels to disengage, there is a safety feature – a set of very fine actual gear teeth, which prevent the clutch and driving wheels from slipping out of alignment. The same mechanism also helps to ensure that any recoil between the two wheels which might happen when the chronograph starts, does not cause them to disengage.

Most chronographs use the well known heart piece and hammer reset system to reset the chronograph hands to zero, which was first patented by the Swiss watchmaker Adolphe Nicole, all the way back in 1844. In the Agengraphe caliber, the hour and minute hands have snail cams on their pivots, with the pressure from beaks of spring loaded levers causing the two chronograph hands to reset to the starting position.

Moser began using variants on the Agengraphe chronograph (which was first launched in 2016) in 2020, in the Moser Streamliner Chronograph; this was also the first time that a flyback chronograph version of the Agengraphe has been produced. While previous versions of this chronograph movement as used by Moser have been automatic, this one’s hand-wound.

I can’t recall any other watch that has this particular combination of indications in an Agengraphe-based chronograph movement, and while Moser’s used the caliber in the Streamliner case, this is the first time it’s appeared in a different collection. It’s a great fit. Like any watch that uses an Agengraphe based chronograph caliber, it is a bit larger than a classic 36mm or 38mm, but in exchange you get one of the most technically original chronogaph movements in production anywhere, and, from a design standpoint, a generously sized dial that has great minimalist visual impact.

It’s a fascinating watch, and a fascinating piece of watchmaking – and it shows that versatility in design at Moser doesn’t just mean dare-to-be-different designs; it can mean very ingenious, and original takes on classic watchmaking design cues as well.

The Moser Endeavour Flyback Chronograph Dual Time Date, ref. 1730-1200: Case, 42mm x 13.2mm, sapphire crystals front and back; water resistance 30M. Dial, turquoise fumé with sunburst pattern, black fumé central disc; tachymeter on the flange.

Movement, caliber HMC 730, Agengraphe based flyback chronograph with date, dual time function with independently settable hour hand; hand-wound, 34.4mm x 7.2mm; column wheel controlled with friction lateral clutch with antishock safety mechanism, running at 21,600 vph in 49 jewels with 72 hour power reserve. Price, $74,400. 

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