It’s been fine for my main use - walking up and down in the local pool and doing pool based strength work. Light weight and clips on easily and firmly. Awkward adding songs from iTunes but that’s more about iTunes. Main frustrations (1)one or both earphones falling out of my ear/s any time I immerse my head - even a gentle back float. So I’ll have to get different earphones once I return to lap swimming. (2)Instructions totally inadequate (& from memory printed in insanely small font)- not unusual but too difficult to find an online version eg I searched quite a while to find out why it was flashing a lot (Battery was charged) and I still don’t know how to find out how much battery it has, or if you can. (3)Low battery warning seemed to come up sooner than I’d expected. I’d also love to know how much time is left between getting that warning and the mp3 actually shutting down.