In reply to Richard Carter: I tried a waterproof mini radio once for swimming. Doing any kind of exercise, or just out hiking or biking on my own, I'm normally listening to podcasts so I thought this might work to take my mind off the boredom of swimming for 45 minutes. Total failure in the sense I couldn't really hear through the earphones whilst swimming properly. It was pretty cheap so not the end of the world, but I've figured swimming you just need to listen to your own thoughts! I'd be interested to hear if anyone has found a listening device of any type that works for swimming.