Had several in-ear headphones including a Bose, the current vicious, Sennheiser and Creative (which I have also recently used) ... now it is unfortunately so that the Creative EBP-630 with increasing welding advent constantly slipped from the ears .. .zuerst I had brought me the Bose In-Ear ... here quickly ordered from Amazon and delivered promptly ... liked neither of the offered performance not to mention the price and the ploppten already without sweating out of your ears ... the same fell at the Sennheiser and the devil continuously from the ears ... all 3 Qualitatively very neat, but they flutschten just always out of your ears ... to come-why are these things so quiet ... I hear not always silently but sometimes you have to walk as well ... then with a big question mark, the Amazon budget in-ear earphone ordered ... after a brief study of the perfect guide was clear how the system works ... and "Bääääm" ... sufficiently loud , the sound was no better or worse than the aforesaid headphones and the best ... these things fit like a glove ... 35minuten Rowing ... the listener sits ... 40minutes ... Freeletics the handset fits ... running. ..kein problem ... all in all a top product with little tam tam ... only the chunky appearance is cause for criticism-but that would be whining at a high level ... I'm very satisfied