The CX680 is an ear canal type earbuds, and the mx680 is similar to apple ear buds, but with better sound. Personally, I think they're both cheaply made, as the plastic ear piece housing comes apart with little to no effort at all and forcing you to place an RMA.
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Vacuum plugs are not suitable for sports: during intense exercise pressure changes, and will lay the ears!
I recommend Bose IE2 (Bose MIE2i) - ideal headphones for sport and in particular for running. And the sound is much better than the Sennheiser.
Apologies for the Google-translator. Regards, Aleksej.
AlexeyDnepr 2 hours ago
The CX680 is an ear canal type earbuds, and the mx680 is similar to apple ear buds, but with better sound. Personally, I think they're both cheaply made, as the plastic ear piece housing comes apart with little to no effort at all and forcing you to place an RMA.
ScarBro2006 11 months ago
what is the different cx680 and mx680 ?
TheA7md2009 11 months ago