IWC Schaffhausen Ingenieur Chronograph and Ingenieur Chronograph AMG (2005)

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In 2005, IWC added two new Ingenieur Chronographs to the Ingenieur Automatics line: One is the classic, rather purist variation in a stainless steel case and the second watch in the Edition Mercedes-AMG has a titanium case.

The inner workings of both timepieces are the same. And on the outside they are definitely the siblings of their respective Ingenieur Automatic models. Even the dimensions are the same: 42.5 mm diameter. Both models are powered by automatic chronograph movement cal. 79350, featuring small seconds with stop function and chronograph with 30-minute counter.

IWC Ingenieur Chronograph IW372501
IWC Ingenieur Chronograph IW372501

In addition to the division for seconds and eighths of a second that this mechanical movement can offer with its 4 Hz, the dial has an external tachymeter scale for precise determination of speed over a measured distance.

IWC Ingenieur Chronograph AMG IW372503
IWC Ingenieur Chronograph AMG IW372503

What is true for the Ingenieur Automatic movement, is also true for the Chronograph movement: A case that is strong as a safe is good, and a shield against extreme magnetic fields is better. This meant that the chronographs also had to grow in height in order to accommodate the soft-iron inner case.

These new chronographs come with screw-in crown, anti-reflective sapphire glass, the typical Ingenieur bezel drilled with five holes, and the secure and yet comfortable IWC bracelet system. The IWC Ingenieur Chronograph Edition AMG is also available on a soft textile strap and pin buckle.

IWC Ingenieur Chronograph AMG IW372504
IWC Ingenieur Chronograph AMG IW372504

The operation buttons of the chronograph are harmoniously and functionally integrated into the case. These buttons with their high operational security strike a historical note to another watch, the Ingenieur with chronograph and alarm that was built from 1991.

Both models (Ingenieur Chronograph and Ingenieur Chronograph AMG) come with black dials. The IWC AMG versions can be distinguished by the red-colored chronograph seconds hand.

Technical details

Featured models
IW372501: IWC Ingenieur Chronograph, with steel case and bracelet
IW372503: IWC Ingenieur Chronograph AMG, with titanium case and bracelet
IW372504: IWC Ingenieur Chronograph AMG, with titanium case and textile strap

Case
IW372501: Stainless steel case
IW372503 and IW372504: Titanium case
Diameter: 42.5 mm
Height: 13.1 mm
Screw in crown
Soft-iron inner case for protection against magnetic fields
Sapphire glass, convex, antireflective coating on both sides
Water resistance: 12 bar (120 meters)

Movement
IWC Calibre 79350, self-winding
Frequency 28,800 VPH (4 Hz)
272 Components
31 Jewels
Power reserve: 44 hours
Decoration: Côtes de Genève, perlage

Functions
Chronograph with flyback function
Small hacking seconds

Dial
Black dial

Strap
IW372501: Stainless steel bracelet
IW372503: Titanium bracelet
IW372504: Black textile strap