Complexity made simple: this is the philosophy of the H. Moser & Cie. Endeavour Perpetual Calendar – undoubtedly the purest, most ingenious and most practical perpetual calendar available. The Endeavour Perpetual Calendar Purity sees the Schaffhausen-based Manufacture pursue its carefully thought-out approach which foregoes branding, focusing on the refined understatement of this model. Available in a limited edition of 50 pieces, with a new 42 millimetre case enhanced by a dynamic, sculpted design, the Endeavour Perpetual Calendar Purity is the ultimate expression of minimalism and purity, with no logo on the dial and the simplicity of double indices. This watch radiates a timeless beauty, proving that true luxury needs no unnecessary adornment.

An iconic piece, the Endeavour Perpetual Calendar from H. Moser & Cie. is renowned for its complex movement, but also for its absolute simplicity. Without multiple sub-dials or an illegible date disc: the indices show not only the hours, but also the months, using a small central hand. A very large date window at 3 o’clock with a new date design and a power reserve indicator at 9 o’clock complete the piece, making it the most legible and easy-to-set watch available, as it can be adjusted forwards or backwards at any time of day. The HMC 800 calibre is housed in a new Endeavour case, whose lines have been adapted to increase the diameter beyond the 40.8 mm model. Measuring 42 mm, this case has a more dynamic look while still resting elegantly on the wrist thanks to its curved case-back.

The Endeavour Perpetual Calendar Purity pushes H. Moser’s minimalist philosophy even further: the dial has indices only at 12 and 6 o’clock and there is no visible logo or brand name. With its magnificent and mysterious midnight-blue fumé dial, this model remains immediately recognisable, proving that true luxury is unmistakable, even without ostentatious branding.

Technical Specifications

Case 18-carat white gold, three-part

Diameter: 42.0 mm, height: 11.9 mm

Curved sapphire crystal

See-through curved sapphire crystal case-back

Crown adorned with an “M”

Engraved on the movement side of the case with “1 of 50”

Dial Midnight-blue fumé with sunburst pattern

Leaf-shaped hands and applique indices

Month indicated with a small arrow-shaped centre hand Big date display

Movement Hand-wound HMC 800 Manufacture calibre

Diameter: 34.0 mm or 15 lignes, height: 6.3 mm

Frequency: 18,000 Vib/h

32 jewels

Power reserve: minimum 7 days

Hacking seconds

Double barrel

Interchangeable Moser escapement

Original Straumann Hairspring® with stabilised Breguet overcoil Pallet fork and escapement wheel made from gold

Movement and components hand-finished and decorated

Functions Perpetual calendar with very large date window and month display via the small central hand Hours and minutes

Offset seconds dial with hacking seconds function at 6 o’clock

Power reserve indicator on dial at 9 o’clock

Leap year cycle indicator on movement side and adjustment push-button

Double Pull Crown mechanism

Strap Hand-stitched black alligator leather strap, red leather lining 18-carat solid white gold folding clasp engraved with the Moser logo