Negative noticeable that the "Gummipümpel" are attached to the headphones and can snap off the sound in the ear itself, if one presses too hard. Also, do not seal 100%, the music still remains clear and loud. After 2 km I had for the first time to feel water in the ear. While the more expensive competitors had then no longer understand, here everything stays loud and clear. Worse is that you - if you're not very careful - the headphones from the deducts Gummipümpel. Headphones in hand, Gummipümpel in the ear. Then fumble something hip.
Positive is the idiotensicherere operation (Plug and play, is recognized as a mass storage) and the reasonable volume. Even the scratch or the exhale underwater remains the music in the foreground.
Operating Technically, the device is not much ... to / from, before song / song back, volume up / down. At least I no longer need. I want to swim and not constantly make adjustments. Because of the "Pümpel remains in the ear" story 2 star deduction which is easily solved too cheap by the manufacturer. Otherwise, for the price of about 30 euros a clear purchasing decisions.