Shut out the world and lose yourself in your music--or let the world in. It’s your choice with the first in-ear noise cancelling headphones from Bose. The Quiet-Comfort 20 Acoustic Noise Cancelling headphones let you enjoy better sound every day, everywhere you go. Turn on noise cancelling to reduce surrounding distractions and focus on your music. Or, at the touch of a button, activate Aware mode to hear what’s happening around you. Proprietary Stay-Hear+ tips provide a soft, secure fit. The inline microphone and remote let you switch easily between calls and music on your device. In excellent condition. Bought new, and only used for one month before having to upgrade to Bluetooth after my phone died. Works with Android phones. Connectivity: 3.5mm Jack Microphone Type: Built-In