H. Moser & Cie. has never been a brand to shout, but bold and recognisable. It lets the work do the talking, and the new Endeavour Flyback Chronograph Dual Time Date Ref. 1730-1200 makes a very clear statement indeed. Launched on 27th May 2026, this is a watch that packs a flyback chronograph, a dual time zone display, and a date function into one of the cleanest dials you will find in Swiss watchmaking today. For a brand rooted in the philosophy that a complication must earn its place on the dial, this is a bold and convincing move.
Organised Chaos Made Invisible
Open the Endeavour Flyback Chronograph Dual Time Date and the first thing you notice is what is not there. No subdials. No crowded counters fighting for attention. H. Moser & Cie. centralises everything, and the result reads instantly.
The dial structure splits into two concentric zones. The outer ring carries the turquoise fumé sunburst dial, home to the leaf-shaped hour and minute hands filled with Super-LumiNova, the date aperture at 6 o’clock, and the white minute track that serves double duty for elapsed seconds and minutes during chronograph operation. The tachymeter sits on the flange, reinforcing the instrument character of the piece without cluttering the main dial surface.
At the centre sits the Blackor fumé disc, also finished with a sunburst pattern. This inner disc carries the dual time function, indicated by a slender white arrow whose tip glows with Super-LumiNova. The contrast between the deep, dark inner disc and the vivid teal of the outer ring creates visual depth without any applied indices or decorative noise. Moser keeps it clean, and that restraint is precisely what makes this dial so successful.
The chronograph hands work on an entirely central display. The red hand sweeps seconds; the rhodium-plated hand tracks elapsed minutes using a retrograde mechanism. Because there are no subdials, the hand stack remains legible at speed and in any light condition. This is the chronograph distilled to its functional essence.
The HMC 730 Calibre in Detail
The engine here is the calibre HMC 730, developed by H. Moser & Cie. in collaboration with Geneva-based movement specialist AGENHOR. AGENHOR is also the creator of the celebrated AgenGraphe mechanism, and its fingerprints are all over the architecture of this calibre.
The HMC 730 takes the automatic HMC 902 used in the Streamliner flyback chronograph and rebuilds it as a hand-wound movement. AGENHOR removed the entire automatic winding system and the oscillating weight, freeing up critical space inside the 34.4mm (15¼ lignes) diameter, 7.2mm-thick movement to accommodate the dual time disc and the date mechanism. The result is a calibre with 383 components and 49 jewels, oscillating at 21,600 vibrations per hour, with a minimum 72-hour power reserve delivered through twin barrels.
The chronograph architecture relies on a column wheel and a two-stage mechanism. The horizontal clutch uses a friction wheel equipped with Agenhor’s patented micro-tooth system. Those micro-teeth solve a long-standing problem with horizontal clutches: they eliminate the small jerk you often feel when engaging the chronograph, because the teeth mesh smoothly regardless of their angular position. A tulip yoke allows precise triggering and release of the chronograph function.
The flyback function applies to both the minute and second hands simultaneously. Rather than using a traditional linear display for elapsed minutes, the HMC 730 employs a retrograde snail cam mechanism. Energy accumulates as the minute hand advances and releases in a single instant when the hand jumps back to zero, delivering a more accurate reading of elapsed time than a traditional sweep minute counter.
The power reserve indicator lives on the movement side, visible through the see-through case back. This deliberate choice preserves the dial’s integrity and rewards anyone who takes the time to turn the watch over. The finishing uses Moser’s signature anthracite treatment with the double-stripe decoration on the bridges, and partially skeletonised bridges reveal the architecture below. The date adjusts both forwards and backwards without risk to the movement, a level of user-friendliness that is genuinely rare in a watch of this complexity.
Restraint in Steel
The Endeavour Flyback Chronograph Dual Time Date occupies a 42mm polished stainless steel case, 13.2mm thick. The curved lugs and clean surfaces follow the Endeavour collection’s established identity, refined without being flashy.
The chronograph pushers sit at 10 and 2 o’clock, which Moser fans will recognise from the Streamliner flyback, giving the watch a bullhead configuration of sorts while maintaining the symmetry of the round case. The screw-down crown sits at 4 o’clock, engraved with the Moser “M”, and the case back is see-through sapphire. Water resistance reaches 3 ATM, appropriate for a dress-sport watch of this character. A grey alligator strap with nubuck finish completes the package, secured by a steel pin buckle engraved with the Moser logo.
The Verdict
H. Moser & Cie. set out to make a travel watch that wears its complexity lightly, and the Endeavour Flyback Chronograph Dual Time Date delivers exactly that. The collaboration with AGENHOR produces a calibre that is both technically adventurous and beautifully considered, and the dial design proves that adding complications does not require adding visual noise. At 59 000 CHF excl. VAT, this sits at a serious price point, but it occupies a distinctive space in the market: a hand-wound flyback chronograph with dual time and date, all on a counter-free dial, from an independent manufacture with complete vertical integration. Very few watches do all of that at once.
H. Moser & Cie. Endeavour Flyback Chronograph Dual Time Date Technical Specifications
Reference 1730-1200 – 59 000 CHF excl. VAT
Functions
- Hours and minutes
- Chronograph with central display and indication of the elapsed minutes and seconds
- Flyback on the minutes and seconds
- Dual Time
- Date
- Power reserve indicator on movement side
Movement
- Calibre HMC 730 developed with AGENHOR for H. Moser & Cie., hand-wound movement
- Diameter: 34.4 mm or 151/4 lignes
- Height: 7.2 mm
- Frequency: 21,600 vibrations/hour
- Double barrel
- Column wheel chronograph
- Two-stage chronograph mechanism
- Horizontal clutch with friction wheel; smooth wheel equipped with micro-teeth to avoid any issues when the teeth intermesh and reduce unwanted jerks when starting the chronograph
- Tulip yoke allowing the chronograph to be triggered or released
- 383 components
- 49 jewels
- Power reserve: minimum 72 hours
- Anthracite finish with Moser double stripes
- Partially skeletonised bridges
Case
- Steel
- Diameter: 42.0 mm
- Height: 13.2 mm
- Chronograph push-buttons at 10 and 2 o’clock
- Screw-down crown at 4 o’clock adorned with an engraved “M”
- See-through case-back
- Water-resistant to 3 ATM
Dial
- Turquoise fumé with sunburst pattern
- Blackor fumé central disc with sunburst pattern and white arrow with Super-LumiNova® tip
- Leaf-shaped hour and minute hands, filled with Super-LumiNova®
- Minute track for the elapsed seconds and minutes
- Tachymeter on the flange
Strap
- Grey alligator leather with nubuck finish
- Steel pin buckle, engraved with the Moser logo
