Well, I have long hesitated before purchasing. This model comes with earphones specially designed so that water does not penetrates into the "speaker" with a protective membrane (ie a standard set and a swimming game). The sound is thus somewhat mitigated, and that's just a little noise, even though I often listen to music a little (too) strong. No problem of infiltration at first use (45 min fairly steady swimming). In back, the arm tends to affect the earpiece, with a risk to get him out. Breaststroke and crawl, ca plays perfectly, not tried diving. I psychotais level infiltration, and have therefore pushed a little strong, suddenly a somewhat painful ear basin outlet. I'll try a little more comfort (less pressed next time). Difficult to choose the right atrium, but I would say more it is big, the better comfort, and if too big, ca grave. I've seen clips where the glasses allow the additional maintenance of mp3, but it's a bit pipo in my opinion, because glasses fall naturally a bit above the ears to allow the cord to capture the mp3. Works perfectly on linux (copy paste in the folder MUSIC). Random cool, well-placed buttons (a little hard). It is absolutely necessary to blow up the AVLS limiting the volume in europe for pool use (press VOL + and BACK (the one at the center, close to RESET) for 5 to 7 sec, up to RED light. Remove the VOL + pressure = 2 blinks, and AVLS is off).
Therefore expect the first use later but cool in water, gives a little speed if rock music, with a little boost to crawl! I'll post if I have worries.
2nd test 45 min: in as the AVLS, better, but still feeble volume level, hardly covers the sounds of water. Not too met with concern to water infiltration.
