Of the diver’s chronographs, the Aquatimer Chronograph in red gold stands out particularly in both visual and horological terms.

It is the first watch in the Aquatimer family to be equipped with the IWC manufactured 89360 calibre, the chronograph movement developed and built in its entirety by IWC. It is distinguished by its flyback function and the two-hand display of the long stop times on a single inner dial.

The 89360 calibre movement, wound by the IWC double pawl automatic winding system, is currently regarded as one of the most modern mechanical movements with a stop function, which can also be observed through the sapphire glass back in this sportingly elegant diver’s watch.

This Aquatimer Chronograph, which is pressure-resistant to 12 bar, is only available in a 44-mm diameter red gold case with a black rubber strap featuring stainless-steel pin buckle.

Thanks to the bracelet quick-change system, the strap can be exchanged quickly and easily for a hook-and-loop strap without the need for special tools.

Technical details

Model: IWC Aquatimer Chronograph in Red Gold
Reference IW376903

Case and dial
Case material: 18-carat red gold
Case height: 15.5 mm
Mechanical external rotating bezel
Diameter: 44 mm
Black dial
Luminescent elements on hands, dial and external rotating bezel
Screw-in crown
Sapphire glass, convex, antireflective coating on both sides
See-through sapphire-glass back
Water-resistant 12 bar (120 meters)

Movement
Calibre 89360
Mechanical chronograph movement, Flyback function, Self-winding
Jewels: 40
68-hour power reserve when fully wound
Date display
Small hacking seconds

Strap
Black rubber strap
Bracelet quick-change system