Overview sennheiser39s new cx 500 brings you the best of both worlds the cx 500 delivers all of the impressive sound quality and superior bass response that you expect from a sennheiser product as well as all of the functionality you need from your portable device optimized for the use with ios devices i version or windows phone and android devides g version the cx 500 features an in line remote with an integrated mic so you can take calls and listen to music with the push