Sony MDR-NC7/BLK Noise Canceling Foldable Stereo Headphones w/3.5mm Jack - Airplane Adapter & Extens

Sony MDR-NC7/BLK Noise Canceling Foldable Stereo Headphones General Features: Color: Black Over-the-head collapsible, swivel design for easy portability Noise canceling technology Dual use capability: listen with or without noise cancellation Noise reduction: reduces up to 87.4% ambient noise Ideal for loud, noisy environments -- i.e., planes, trains, buses, work or dorms 3.5 mm jack works with most audio devices, including MP3 players, computers, portable DVD players, and more 4.9-foot cord length, approximate (7-feet, with included extension cord) Includes dual jack in-flight airplane adapter & carrying pouch Requires one (1) AAA battery (not included) Audio Specifications: Driver unit: 38 mm, dome type Frequency response: 30 Hz - 20,000 Hz Impedance: 40 ohms at 1 kHz (when the power is on), 45 ohms at 1 kHz (when the power is off) Noise level: Total noise suppression - approx. 9 dB (when power is on) Selectivity: Noise canceling switch (On/Off) Sensitivity (dB): 102 dB/mW (when the power is on), 100dB/mW (when the power is off) Regulatory Approvals: FCC Package Includes: Sony MDR-NC7/BLK Noise Canceling Foldable Stereo Headphones Extension cord Airplane plug adapter Carrying pouch Operating instructions Additional Information: Notes: Model: MDR-NC7 P/N: MDR-NC7/BLK Product Requirements: One (1) AAA battery (not included) Audio device with 3.5 mm jack Informational Links: Product Page