Check here:

http://www.sportcount.com/products.p...72d81244e93887

I have both the basic Lap Counter and the Combination SportCount. Since I like simplicity, I prefer the former since I track time using my watch and need the counter only for counting laps. I highly recommend both---I've found them well-made, unobtrusive, and easy to use.

I swim in 25 yard pools, so it's 72 laps a mile. Having the lap counter lets you focus on technique or simply zone/Zen out (get lost in the rhythm of swimming).