Hi Bean..... I am enjoying these very much....I have used them about 3 times since bought them in the last week, once on a 3 hr flight, and twice during work outs. It seems that the more I wear them, the better the fit (or maybe I'm just learning to use them better). The noise cancelling device is rechargeable, I think it holds a 6 hr charge. They have a shirt clip, then just above that is a "control box". It allows you to control the volume of your device from that point, skip ahead or backwards in song selections, and, if you're using an iPhone, it has a microphone in it. Also, you can't beat the purchase plan. $25/month, interest free with no delays for a credit check or any of that kind of BS. Quick purchase time. Might even look a little better than your speed tape set.
🙂 breeze
http://www.bose.com/...p&Variant=qc20i