H. Moser & Cie. are back in the horological kitchen, and they’ve just cooked once again. This new watch merges three complications into one cohesive image.
Upon the release of the Streamliner Small Seconds Green Enamel Boutique Edition some time ago, I declared that H. Moser & Cie. were one of the most serious-unserious watchmakers out there. Their signature concoction of minimalism, colour, and occasionally tongue-in-cheek antics has made them one of the best independent watchmakers of the modern era.
In early 2020, H. Moser & Cie. added to their repertoire with the Streamliner Flyback Chronograph. Unlike most versions of the chronograph, which use detached registers to track elapsed minutes or hours, the brand opted to place them on the central axis instead. This major aesthetic clean-up, a signature of H. Moser & Cie.’s design philosophy, was made possible through the use of the Calibre HMC 902, a complex mechanical calibre developed by Geneva movement specialists Agenhor.
Fast forward to 2023, and the Meylan family, who own H. Moser & Cie., acquired a stake in Agenhor to further cement the partnership. Now, for 2026, the introduction of this new watch represents the culmination of both H. Moser & Cie.’s serious horological chops and their longstanding collaboration with Agenhor.
Stealth & Subtlety
Enter the H. Moser & Cie. Endeavour Flyback Chronograph Dual Time Date, taking the complexity of the original recipe and multiplying it threefold. You might expect a watch as complex as this to have near-unwearable dimensions, but surprisingly, that’s not the case. At 42mm in diameter, the stainless steel watch measures just 13.2mm thick.
Adding such intricacies to the Endeavour collection was also a smart move, as the more rounded case profile demands less real estate than the cushion-cased Streamliner. The demands of the movement, interestingly enough, also contribute to the wearing experience: the crown is situated at four o’clock instead of three, while the flyback and start-stop pushers are positioned at ten and two respectively, out of the immediate path of wrist movement.
The wearable nature of the watch continues with the alligator leather strap. The bi-colour design echoes the dial, with grey on top and teal underneath, and is finished with H. Moser & Cie.’s standard pin buckle. While a metal bracelet would have leaned further into the sporty nature of this watch, the Endeavour has always been the brand’s dressier line. As such, water resistance is rated to just 30 metres.
Scrubbing Up
As alluded to earlier, the design of the watch has been methodically executed to bring more attention to its functionality. That doesn’t mean the brand hasn’t had room to play with form, as the dial consists of three distinct sections. A black tachymeter scale with white text encircles the dial, while two shades of fumé, teal and grey, make up the remaining sections. It’s almost like H. Moser & Cie’s version of a roundel.
The teal section contains the minute and second indexes and features a sunray-brushed finish, while the central grey disc sports a more granular texture. That’s not all, though, as it also serves as a moving caller-style GMT disc.
Adorned with a single white arrow, the grey disc can be rotated to subtly indicate a secondary time zone. A date window makes itself known at six o’clock, while the Endeavour’s classical leaf hands are used for the hours and minutes. Finally, as always, a logo is nowhere to be found. At H. Moser & Cie., they prefer to let their watches do the talking.
Agenhor Amazes
But if the front of the watch talks, the back simply screams. Turning the Endeavour around, you’re greeted by an open caseback and one of the most jam-packed movements you’ll ever see. That is the manual-wind Calibre HMC 730, which beats at a relaxed 3Hz (21,600VpH) and offers a 72-hour power reserve. While that’s a comfortable spec sheet, I think we both know that’s not the reason this watch is so awesome. Leveraging their partnership with Agenhor, the new movement is based on the manufacturer’s elaborate AgenGraphe architecture.
Let me break down what that means. Of course, the star of the show is the co-axial chronograph, which does away with traditional registers for faster readability. The seconds travel via the red hand, while a snail cam, often seen in retrograde watches, advances the minute hand seamlessly to the next index. But the feature that has haute horlogerie brands raving about the AgenGraphe is its patented AgenClutch system.
Typically, chronographs employ either a horizontal or vertical clutch. Horizontal clutches are beautiful to look at but can stutter when activated; vertical clutches are smoother but larger and more susceptible to wear. The AgenClutch, simply put, gives you the best of both worlds: beauty and smoothness without the drawbacks of either. Combined with its flyback capabilities, dual-time display, date window, and rear-facing power reserve indicator, you get a remarkable amount of watch in a surprisingly compact package.
Initial Thoughts
There’s usually one of two ways covering an H. Moser & Cie. watch can go. Either you’re talking about the sheer artistry of the piece, or you’re nerding out over the mechanical mastery behind it. That’s not to say the brand’s watches often discount one in favour of the other, though. Case in point: this new Endeavour Flyback Chronograph Dual Time Date.
Once again, the independent brand has proven they’re at the top of the mountain when it comes to haute horlogerie. Partnered with the geniuses at Agenhor, they’ve managed to tame one of the most complex movements I’ve ever seen within the elegant aesthetics of the Endeavour line.
I suspect would see how intricate the Cal. HMC 730 is and immediately capitulate with some sort of hyper-realised design. But as the saying goes, “with great power comes great responsibility”, and H. Moser & Cie. have created a responsible, elegant watch that still draws attention to the horological power it wields.
Reference & Specifications
| Feature | Specification |
|---|---|
| Reference | 1730-1200 |
| Dimensions | 42mm case diameter x 13.2mm thickness |
| Case | Stainless steel |
| Dial | Sunray-brushed teal & black fumé with red & white accents |
| Crystal | Sapphire |
| Caseback | Open, sapphire |
| Movement | Manual wind Cal. HMC 730 with flyback chronograph (60sec, 60min hands), caller-style GMT, power reserve indicator, & date complications |
| Power Reserve | 72h |
| Beat Rate | 3Hz / 21,600VpH |
| Water Resistance | 30m / 3bar |
| Strap/Bracelet | Gray/teal alligator leather strap with steel pin buckle |