I've bought 3-4 of these in total and they tend to last between 4-15 months. They all fail the same way, despite being designed for sports use they're not that resistant to moisture.
I tend to use them in the Gym for running/rowing/cycling for about 40-50 mins, 3 times a week.
if your lucky (and perform the maintenance actions) they'll last up to 15 months otherwise much shorter.
These are top notch ear phones, when I was jogging with these on they never fell out once, unlike lots of other ear phones I've used. I recently broke these head phones, through fault of my own, but bought a new pair stright away as they are so good. Great buy for anyone but absolutely great for people who jog!
They are so light that the only reason you know they are on your head is the sound, which is a massive improvement over the standard ipod ear buds.
I ran 12 miles with them today and did not put my hand to my head to adjust them once, where as normally I am adjusting constantly.
These do exactly what I wanted them to do - stay on my ears while I run! I've struggled to find headphones that don't constantly fall out but these stay on all the time and the sound quality is good.
If you wear a jacket during the cold weather it can keep bumping them a bit because of the strap round the back but that is a very minor issue.
Very happy with these
I have tried various earphones all which fall out of my ears, not sure if I have extra small ears or something but spent more time at the gym trying to put earphones in then working up a sweat.
Thought I would give these a go and I have not been dissapointed, they are brilliant they fit securley and the sound is great they look pretty cool too. Thanks to everyone who posted a review as they were really helpful.