IWC Big Ingenieur Chronograph watch, round steel case (45.5mm diameter, 14.5mm thickness) with screw-in crown and transparent caseback, black alligator leather strap, black dial with silver hands and index hour markers, hour and minute counters combined in a single totaliser at 12 o'clock, date display with crown-activated rapid advance, stopwatch function with hours, minutes, seconds, and flyback function, 40 jewel Caliber 89360 self-winding mechanical chronograph movement with 68 hour power reserve, scratch-resistant sapphire crystal, water resistant to 120 meters.
Following the successful launch of the Big Ingenieur, it was only a matter of time before this coveted giant of a watch became available with an IWC-manufactured chronograph. For the first time in this watch family, it also came with the analogue display developed by IWC for long recorded times: stopped minutes and hours can be read off just like the time of day and require no addition. Short stop times of under a minute are timed by the central stopwatch hand. Used in combination with the tachymeter scale, this provides the speed at which a reference distance of, say 1,000 metres, has been completed. Thanks to the flyback function, pushing the reset button returns the stopwatch hand to zero and immediately starts a new timing sequence. For anyone who appreciates complex mechanics, the sapphire-glass back provides a view of the 89360 calibre at work. It is powered by IWC?s highly efficient double-pawl winding, which builds up a power reserve of 68 hours in no time.
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