H. Moser & Cie. has developed a perpetual calendar for its Pioneer collection that is the first complication of its kind to be water-resistant to 120 metres. The modular case, with a diameter of 42.8 millimetres, is made of 5N red gold with black DLC-treated titanium components. Inside beats a hand-wound mechanical movement, calibre HMC 800, which guarantees a minimum power reserve of 7 days. The Pioneer Perpetual Calendar features a smoky slate dial with SuperLuminova-filled leaf hands and red gold applied hour and month markers, date display at 3 o'clock, small off-centre seconds at 6 o'clock and power reserve indicator at 9 o'clock. For the strap, one can opt for black alligator or rubber.
