I was worried that the swimp3 was going to be another expensive gadget that didn't live up to it's promises.  I took the chance when I bought it because I desperately wanted something to help extend my swim work-out.  IT WORKS!  this mp3 player is amazing!  It sounds tinny when your head is above water, but as soon as you submerse your ears, the sound quality is fabulous.  And the music really helps my workout!