Does not fit properly on my IWC Aquatimer. Or more precise: does not fit at all. I will have to try to make an adjustment to make it fit with the risk ruining the strap. I will not recomend this item to anyone.
After being disappointed about the strap not fit to my watch, i started to carefully adjust the strap with a dremel tool. That worked out fine. In the long run i am happy with this strap being so much cheaper then a genuine IWC strap.
Attention. Doesn't fit the original changing system. What a shame, the quality of the rubber seems good.