A fantastic and long forgotten model from IWC. This is the IWC Perpetual Calendar Chronograph Titanium GST made in the early 2000s. With a full perpetual calendar even displaying the full year, in a strongbox type case 16mm thick and 43mm diameter all in titanium with 120m WR this really is the indestructible sports complicated watch.

IWC don’t really make anything like this anymore and if released today would be well over £20k RRP, so it’s worth hunting one of these down on the preowned market. As a preowned buy this is bang on the buck for quite simply what is the best value sports perpetual calendar chronograph on the market.

The design harks back to the days when IWC made purely tool watches with an industrial and utilitarian feel to them, but it has aged very well and looks as relevant today as it did back in 2004.

Are there any drawbacks to the watch? Well it can’t be worn as a dress watch due to its size, but I guess since it is a sports watch that’s not really fair to say that is it? The perpetual calendar module is all set through a single crown, so it if goes out of synch it has to be sent back to a qualified watchmaker to be reset which is a pain.

The movement itself is the tried and tested valjoux 7750 ( with the perpetual calendar module on top) which although not the most finely finished, and used in many watches, it is perfect for a sports watch to take the knocks and bumps. The only reason it hasn’t got 10/10 is because it not an in house movement and uses a bog standard Valjoux movement.

I really enjoy wearing the IWC Perpetual Calendar Chronograph Titanium GST as a daily, often forgetting I am wearing an incredible piece of micro mechanical engineering, and lastly it has one of the the most beautiful moonphases ever, with a real starry night sky!