The watch has a round, 42-mm-diameter case made of rose gold. The sapphire crystal over the dial is slightly domed and has a nonreflective treatment on both sides. There is also a sapphire window in the screwed caseback, offering a view of the movement, automatic Caliber MB 4810/912, which controls the timekeeping and calendar functions. For manual winding, the watch has a fluted, easy-to-grip rose-gold crown, topped by the Montblanc star emblem in mother-of-pearl. Buttons built into the flank of the case, which are operated by a corrector tool that comes with the watch, set the date, day, month, and moon-phase displays. The strap is in brown alligator leather and has a pronged buckle made of rose gold.
The Star Quantième Complet, which Montblanc says will be on sale starting in August, will also be available with a stainless steel case. Prices are $18,000 for rose gold and $5,100 for steel.
Movement: Caliber MB 4810/912, automatic; 25 jewels; frequency = 28,800 vph; power reserve = 42 hours; flat hairspring;
Functions: Hours, minutes and seconds on center dial; hand-type date display; day and month indication; moon-phase display
Case and strap: 18k rose gold, diameter = 42 mm, height = 12.17 mm, domed sapphire crystal with double nonreflective coating, sapphire exhibition caseback affixed by six screws, 18k rose gold crown with mother-of-pearl Montblanc emblem, water-resistant to 30 meters; on brown alligator-skin strap with 18k rose-gold pin buckle
Dial and hands: White silver-colored dial with central guilloché pattern, black Roman numeral indices, minute and date scale with black Arabic indices, blued steel feuille and baton hands