Russel wrote' How do you find the battery life on your headphones? Battery life has not been an issue but I don't use them as frequently as you might. I mostly use a pair of Sennheiser wireless RF headphones along with my bluetooth keyboard means I can wander about my house and be online through my iMac desktop. Yes, the Bose require the set to be turned on and only operate with the NC on. They are very comfortable and fully enclose the ears. Another use for NC headphones is on air flights when you can reduce the engine noise to zero. The Bose are very well made. TF> > Click on the link below to go to our homepage. > http://www.icanworkthisthing.com > > Manage your subscription by using the web interface on the link below. > //www.freelists.org/list/macvoiceover > > Users can subscribe to this list by sending email to > macvoiceover-request@xxxxxxxxxxxxx > with 'subscribe' in the Subject field OR by logging into the Web > interface at //www.freelists.org/list/macvoiceover >