It's got about as much longevity as cool water - which is to say medium short. It's nice, the lemon notes are smooth, almost creamy, though they're very artificial, like a froot loops flavouring. I used to have some and wore it alot in the summer, but ended up selling it as those sporty aquatics don't suit me that much.
Cool Water frozen is also good - I think better than the original - smells exactly like the name says - cool water, but the aquatic feel of it is frozen somehow. Nice and fresh, but again I'm selling my bottle as it doesn't suit me.
Cool Water Deep is the best of the bunch, but unlike the other two, it doesn't resemble cool water that much.