Noise-cancelling is a must-have for me. It significantly increases quality of life to have it with you, wherever you go.
And I like the high-quality look and haptic feeling of the NWZ-E585. It looks like a classy audio device. And it feels really good in your hand.
I assume also there are jack-to-bluetooth adapters for wireless.
I guess the noise-cancelling has to be built into the mp3-player to avoid this. I have not seen elegant in-ear headphones with built-in noise-cancelling yet.
As long as you don't mind over the ear headphones Bose QC35 are wireless but also come with a optional 2.5mm to 3.5mm jack cord.
I imgaine that there's lots of alternatives on the market too.
I assumed it was only possible when on the headset as it needed to be measured and cancelled based on the direction of the sound.
I'm failing how a device in your pocket can cancel any ambiant noise