Sony MDRNC7/BLK Noise Canceling On-Ear Headphones - Black

With the Sony MDRNC7/BLK Noise Canceling On-Ear Headphones you can reduce unwanted ambient noise by 87.4%. These headphones help you concentrate or relax so that your mind is not concentrating on noises around you. The ideal times to use noise canceling headphones would be studing for finals, concentrating at work, and even at home when the kids are home and you want to have some quite to read a book. The Sony MDRNC7/BLK is highly portable since you can swivel and fold the earphones in to condense in size, to fit in your backpack, briefcase or side table drawer. You can also plug in your headphones to your music player with it's standard audio jack or use on the plane with the dual jack system for in-flight music services. Sony MDRNC7/BLK Noise Canceling On-Ear Headphones in black features: * Audio * Driver Unit: 38mm, dome type * Frequency Response: 30Hz&#15020kHz * Impedance: 40 ohms at 1kHz (when the power is on), 45 ohms at 1kHz (when the power is off) * Noise Level: Total noise suppression - Approx: 9dB (when power is on) * Selectivity: Noise Canceling switch - Available (ON/OFF switch on housing) * Sensitivity: 102dB/mW (when the power is on), 100dB/mW (when the power is off) Weights and Measurements * Cord Length (Approx.): 4-9/10' (1.5m) * Weight (Approx.): 4.7 oz. (134g) Audio Features * Ear Cups: Swivel for folding Hardware * Cord: Dual-sided * Headphone Type: Open-air, Dynamic Power * Battery Life (Approx.): Up to 50 hours with alkaline batteries; up to 25 hours with manganese battery (may vary with usage conditions) * Power Handling Capacity: 100mW General * Case Type: Pouch * Design: Over-the-head, Noise canceling * Headband: Wide, Adjustable, Foldable * Magnet: Neodymium * Plug: Stereo mini plug * Type of Use: Noise Canceling Accessories Included * Carrying Pouch * Inflight Plug Adaptor * Manganese AAA Battery * Warranty Card * Extension co