As previous review says, the picture shows CX300 II.
In fact, my CX300 Eco doesn't read "CX300" ANYWHERE, not in the box, manual sheet or headphones.
Also the cord is ASYMMETRIC, not symmetric as it reads, which was the main reason I got these and not CX300 II.
And well, the cord is quite thin, so I'm expecting it to break in few years, as my previous headphones.
But still! I'm quite happy and like my cheap ecophones. The cardboard package was really nice and "I think" they sound nice but I'm no audiophile.