In 2013 IWC Schaffhausen embarked on the Formula One season as the Official Engineering Partner of the MERCEDES AMG PETRONAS Formula OneTM Team. The designers, technicians and engineers on both sides share a common passion for precision and performance engineering. To mark this cooperation, IWC rolled out the Ingenieur Chronograph Racer in stainless steel with an engraving of a Formula One racing car on the case back. The rugged timepiece has been equipped with one of the most efficient movements manufactured entirely by IWC, the 89361 calibre. It displays stopped times in hours and minutes on a totalizer, while times up to one minute are measured by the central stopwatch hand. It also features a tachymeter scale that shows the average speed covered over a distance of 1,000 metres. Thanks to the flyback function, pressing the reset button brings the stopwatch hand back to zero and immediately restarts timing, making it perfect for recording pit-stop times. The chronograph is available with a slate-coloured dial and black totalizers or a silver-plated dial with silver-plated totalizers and blue hands. The red "60" in the chapter ring was inspired by the digital display on the steering wheel of the MERCEDES AMG PETRONAS Formula OneTM Team racing car.