The chronograph, which is equipped with a flyback function, is operated via two cylindrical push-buttons in the side of the case (a contemporary upgrade, IWC says, from the “mushroom”-style pushers of the 1985 watch) and records stopped times on the single dark blue subdial at 12 o’clock, which also hosts the moon-phase. The aggregate readout of hours and minutes together is a much more intuitive display than the separate subdials used on most chronographs. The blued, central chronograph hand allows stopped times to be displayed within an accuracy of 1/4 second. An added bonus: the movement is designed so that the chronograph can run continuously without diminishing the power reserve.
The 18k rose gold case of the new IWC Da Vinci Perpetual Calendar Chronograph measures 43 mm in diameter and 15.5 mm thick. It has a more subtle execution of the twin-frame bezel that was a hallmark of the 1980s Da Vinci collection, and also features newly designed, curved, moveable lugs to ensure that the strap fits snugly around any size wrist. A sapphire crystal in the caseback reveals Caliber 89630, which features an automatic double-pawl winding system, a 28,800-vph frequency, and a 68-hour power reserve. Aesthetic highlights include blued screws and a solid gold winding rotor. The price will be announced at SIHH 2017.
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