Noise Canceling Headphones with Battery-in-cord

Jensen Lightweight Noise Canceling Headphones with Battery-In-Cord These great-sounding, lightweight headphones feature active noise-canceling circuitry that helps block unwanted ambient noise, up to -15 dB. Designed to reduce the environmental sounds on planes, trains, buses or metropolitan areas. The 3.5mm stereo phone plug fits most MP3s, iPods, laptop computers and airline sound-system jacks. Built-in volume control. Headphones fold and store away in their own compact pouch. NC technology reduces outside noise for a better listening experience Noise cancellation up to -15dB @ 300Hz 30mm neodymium drivers Frequency response: 20Hz-20kHz Sensitivity: 104dB +/-2dB @ 1KHz Max input power: 80 mW Impedance: 32 Ohms Cord length: 4' 9" / 1.5M Convenient, foldable design Includes airline adapter, AAA battery, and travel pouch