Overall, this has been a very reliable unit and has made swimming much more fun.  but beware, the battery died on me after two years with no more than 1.5 hours of playing time per week... no more than a  thousand hours of playing time.  the third party warranty shop told me they would replace the battery for $58.  Sorry but for that much money i will just buy a new one.  so plan on it being a disposable mp3 player.  Even at that rate it was worth the money, and I paid $100 for it.

Okay - this is the 4th one I have had (not joking).  One of them didn''t load, one of them froze after a week of use and two of them lasted about 6 months.  The shame of it is...it''s actually a great little machine when it works!  I found the sound clarity fantastic, the earbuds okay (once you take the loop off the top of the buds) and the sound was consistent in tone.
I''m just not sure why, technically, the product fails without notice.  Sometimes it would charge, sometimes it wouldn''t, but invariably it would fail and once it does...it won''t start again.  There''s just some sort of hardware fault with this particular product and that''s a pity.
Even with this rating I WOULD rate it higher than the Waterfi Ipod shuffle because the Waterfi is too small - even for my small fingers - and the velcro loop to attach it to your goggles is cheap and tacky.    I would also rate it way higher than the Finis SwimP3 where the sound quality was awful and they kept coming off my goggles.  So, I''m going to get the next generation Speedo and see how that works.  Hopefully more longevity than this model.

This is terrible

Used several times a week at the gym pool- adult beginner lap swimmer. The sound is better in the water than out of the water. It does get me to keep my face in the water. It took forever to charge. That was a big pain. Adding music is easy enough. If you do not load the right file extension type- it will start glitching- which is another pain. As soon as you remove the file(song) that the player does not support, it will function properly. It does not have a display screen - but, I will learn to live with it.

I like this product.
There are 2 things that bothered me. My first one lasted only 8 months with almost daily use. However, when it stopped working Speedo replaced it immediately. Awesome service response from Speedo.
Sometimes the computer has trouble recognizing the player. This happen on the 1st and 2nd one. Eventually I get it to load but this may be my computer.

I love this product, It´s easy to operate and confortable