I have the Garmin FR-70. It works great for swimming (waterproof) timing and biking and running. It uploads data automatically too to Garminconnect.com. Great.

I buy the cheapest waterproof watch that CitySports sells (I think it is around $19), a Timex. My first lasted 10+ years, and now I'm several years in w/ my second.

swim watch? do you mean water resistant watch? Or a watch specifically used for swimming (I didn't know they existed until I looked on Google)

Garmin makes one that looks pretty cool. $150
https://buy.garmin.com/en-US/US/into-sports/swimming/garmin-swim-/prod97287.html

there are some here too
http://www.swimoutlet.com/swimming_watches_s/378.htm

http://www.swimoutlet.com/product_p/17775.htm

as well as where you bought it, how easy it is to use, and about how much you paid for it?

Thanks.