While the dial is usually the first thing to catch your eye on any watch, it's more often the mechanics driving it that showcase its true beauty. That proves especially true for minute repeaters, one of the most complex mechanical watch complications ever created, using an acoustic chime to indicate the hours, quarter-hours, and minutes on demand. H. Moser is taking things even a step further with its new, limited-edition Endeavour Minute Repeater Cylindrical Tourbillon Skeleton Cosmic Rain, combining a minute repeater, a flying tourbillon with a cylindrical hairspring, and a fully skeletonized movement.
Limited to just 20 watches worldwide, the Endeavour features a 40mm case crafted from lightweight titanium, with a pronounced crown located just below 3 o’clock that controls its functions. H. Moser ditches traditional dial design for an openwork dial that sets the intricate movement on center stage, with a small “Cosmic Rain” aventurine subdial set with hand-applied mother-of-pearl inlays that resemble a star-filled sky. The watch also features a one-minute flying tourbillon fitted with a hand-formed cylindrical hairspring, inspired by 18th-century marine chronometers, fully exposed at 6 o’clock.
Rather than concealing the minute repeater hammers like most traditional designs, H. Moser decided to reposition the entire chiming mechanism on the dial as well. Powering the mechanical madness and its multitude of functions is H. Moser’s in-house HMC 909 caliber, comprised of 415 components and capable of holding an impressive 90-hour power reserve. Each of the 20 H. Moser Endeavour Minute Repeater Cylindrical Tourbillon Skeleton Cosmic Rain comes fitted on a grey alligator leather strap and is priced at $440,000. 
Source: H. Moser & Cie.