Conclusion: The Sennheiser CX890i are a nice pair of headphones, the included remote control with built-in mic does an apt job during calls. With great sound quality and very distinctive looks, the CX890i is a very impressive headset, although you should take a look at some of Sennheiser’s other offerings if these seem to be out of your budget.
Excerpt: You've got a new iPhone 5 or Android smartphone and found the Apple EarPods to be sadly lacking? It's a common story - the Sennheiser CX 890is have been designed with the smartphone user in mind. They look like a better match for your iPhone than Apple's own headphones...
Pros: Rugged build, Cool design, Big remote
Cons: Cable doesn't feel premium, A tad pricey for what they are
Conclusion: The Sennheiser CX 890i earphones miss the mark. They look interesting, and we often like earphones that strive for intense, bright detail. However, they over-do it, frequently becoming harsh-sounding, while neglecting the mid-range. Feed them the right type of music and they can sound great, but they’re just too temperamental to get close to a recommendation.
Pros: Interesting look, Decent remote
Cons: Brittle treble, Temperamental sound is genre-specific, Design doesn’t fit well with price
Summary: Høretelefonerne fra Sennheiser er lidt som en rutsjebane. På den ene side er kontrol/mikrofon af god kvalitet med let håndtering, på den anden side sidder den for langt nede. På den ene side filtrer ledningen nemt, og på den anden side får man en smart spole. På den ene side er bassen engagerende og kontrolleret, på den anden side er diskanten for skarp, og mellemtonen en smule kedelig.