I saved the attachment from Ofrei.com 2 years ago, which shows which watches this strap fits (i.e. those using an Omega 020ST1613934 bracelet) which I found out was a chronograph after I googled it. So the 1613/934 is the bracelet for SMP chronograph, and you want a rubber strap for watches that can take a 1610/930 bracelet and end links.
I bought one with buckle from Jared for much less than Ofrei, planning to use it with my SMPc chronograph or my Ti SMP chronograph. But I'm using the stock bracelet with adjustable clasp on the SMPc chrono for now. I plan to install the strap on my older Ti chronograph the next time I want to wear it.
I had heard that I could try it on my Planet Ocean 2500 but never got around to it, since I added the adjustable clasp to that one as well.
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