I never knew such a thing as these existed till I saw someone at the pool wearing headphones for their swim. I did a little looking about and settled on these based on the specs and the sheer volume of reviews. I did not expect much for the price and felt that if I could hear anything worth a darn while I swam it would be worth the money.Pros- Where to start? This was a real game changer. My first thought while swimming was, “These actually work!” Second thought, “Man, that sounds really good!” Next thought,” “This is so damn fun!” (Swimming to my tunes). I had created a playlist and the CPU recognized the unit so it was as simple as “move to” and done. The buttons are easy to use and find. The instructions are simple (though there are some typos). Only once did I have a bit of water make it past the earbuds and a simple shake took care of that. 8GB of music is almost too much. I loaded maybe 800-900 songs and still have room to go. The price? Considering the quality of sound and the wicked fun these brought to my swim I would think paying twice what I did would still be a good deal. Clear, full range sound being the most surprising pro.Cons- I cannot speak to the longevity of these. I relied on other reviews that appeared to indicate they had them for a long time. Folks complain about them falling out when “kick-flips”…can’t speak to that either but a little lift of the ear when you insert the bud and those things were snug for me. The biggest con I can see is the (innovative) USB clip. Without it you are hosed. I plan to try and find some replacements as I hope to have this for a while and suspect I will lose that damn clip before then. There is no alternative. Not a big deal but without it you cannot use the phones.Bottom line- I am beyond happy with these. They exceeded my expectations in sound quality and are such a great price I felt like these were a bargain. Absolutely no hesitation to recommend a purchase to anyone.