To mark its cooperation as an official engineering partner of the MERCEDES AMG PETRONAS Formula One™ team, IWC rolled out the Ingenieur Chronograph Racer in stainless steel with an engraving of a Formula One racing car on the case back.

– Brushed/satin finished stainless steel with polished finished beveled corners.
– Brushed stainless steel bezel with an engraved & black filled Tachymetre scale.
– Strap: Black rubber with blue alligator leather inlay.
– Applied polished blued steel index hour markers with luminous fill.
– Black printed minute/seconds track on a raised black flange at the dial perimeter. Red “60” was inspired by the digital display on the steering wheel of the MERCEDES AMG PETRONAS Formula One™ Team racing car.
– Polished blued steel hands with luminous fill, hour & minute hands partially skeletonized.
– Date window located at the 6 o’clock position.
– Small running seconds hand in the sub-dial at the 6 o’clock position.

Dial:
– Main silver dial with a very fine concentric circle brushed finished.
– Polished steel rimmed sub-dials.
– Silver sub-dials with a flat center & a concentric circle textured perimeter.

Chronograph/Stopwatch function:
– Features a “Flyback” function which allows instant restarting of the chronograph with a single push of the button rather than the need to stop, reset & then start the stop-watch
again.
– Large central seconds counter.
– The chronograph sub-dial at the 12 o’clock position doubles as both the chronograph 60 minute counter (longer hand pointing to outer diameter) & the 12 hour counter (short hand pointing to marking on inner diameter), allowing for an easy & instant reading of the stopwatch.
– IWC calibre 89361, beats at 28,800 vph, contains 38 jewels & has an approximate power reserve of 68 hours.

Also known as: IWC IW378509, 378509, 3785-09, iw3785-09, IW 378509, IW-378509