The IWC Aquatimer Chronograph 3767 was introduced in 2009, marking the return of the external rotating bezel to the Aquatimer - a feature not seen since the 2004 discontinuation of the reference 3536.
The case of the Aquatimer Chronograph measures 44mm across, at a height of 15mm. The case of this reference was only available in stainless steel; rubber-coated for the Darwin Foundation model. It was discontinued with the introduction of the next generation of Aquatimers in 2014.
Reference IW3767-08 was added to the collection in 2011. Contrary to the earlier version, it does not feature contrasting subdials. Small technical changes were also made to the bezel. The bracelet is now all-brushed.