Model of Rolex watch

[Attila]

Hello everyone,

Today at work I notice a colleague (who normally wears an IWC chrono) was wearing a different stainless steel watch.

I inquired and they replied it was a Rolex to which I was surprised (only one other person wears a Rolex that I know of and its' a Sub). I looked at it and I must say I have never seen anything like it. It was basically looked like a chronograph watch, but had the big second hand constantly moving, and then the subsidiary dials were used as a calender. There was also extra buttons on the outer casing. I am so confused I think it might be a fake, but I don't have the heart or knowledge to break their heart.

Subsequently it looks similar to this one I found on the net.