"They're so light I can hardly feel that they're there, and I can hear ambient noise, so the overall design works as advertised..."
"The MX680 does not produce the thunderous bass of expensive, tightly sealed ear buds, but overall sound quality is very good, including decent bass (much better, for example, than the tinny sound that results when sealed ear buds slip loose in the ear..."
"This attribute is..."
Average rating from 10 reviews
Newegg.com - Sennheiser Adidas Sports Earbud Headphones with Volume control & Earfin...
"not asking for audiophile quality but from this company and at this price ..not at all a good buy..."
"they would be good for retention and comfort ..heavy moiture and sweat..can not say..."
"or head to the 99c store and wear a headband over your ears and for head.noleakage and good sound and retention ..for 99cents..."