Voted top noise cancelling in-ear headphone many times over
battery lasts for 16 hours
In excellent condition and still under warranty
Android version, works with iOS devices except for the in-line control
Box set with original receipt
https://www.bose.com/products/headphones/earphones/quietcomfort-20i-acoustic-noise-cancelling-headphones.html
http://www.cnet.com/products/bose-quietcomfort-20/