Bose QuietComfort 3 Acoustic Noise Cancelling Headphones High-performing noise reduction for home, work or travel Rich, detailed audio highlights musical nuances Comfortable, on-ear fit for hours of easy listening Includes two audio cables, one with mic/remote for iPhone/iPod control and hands-free iPhone calling, and a travel case 25 hours of use on average from rechargeable Li-ion battery; includes charger Connectivity technology : Wired