Works as advertised and it's very easy to use.
I love it.

works perfect!  It's like magic.  ;-)  I have no idea how it all works but it is really helping me track my progress toward my first Tri event in September.

This works as advertised.  Nice to swim without counting laps or strokes.  Sure,it is a luxury, but it is nice and gives good information beyond counting (calories burned, swim efficiency, speed)

laps are off sometimes, which screws up your time distance pace etc...I haven't even figured out how to get it to track my Free.  so I wouldn't tell anyone to by it.

This is an cool watch! The first time I used it, I swam 5K and it counted every lap perfectly. Aside from counting laps and strokes, another great feature is that it evaluates your efficiency,  and you can measure your progress and set your goals. My efficiency is 34 and my goal is to lower that number to 30. In this case, the lower the score, the better. One thing I noticed is that the watch counts your laps when it notices a time variation on your strokes, so if you notice it isn't counting your laps correctly, just make sure you glide a little longer at the beginning of each lap. I love this watch,  it's worth every penny!

Pretty accurate. I like that it's very lightweight.it's totally worth it. It'd be better if it had additional lighting. It's hard to see under water with darker goggles. At the beginning it was a little confusing to get used to how the system is organized but i think I got it.I wish there would be better way to transfer the data to a computer to record history. Right now it's all done manually.