Sony Headphones, Noise Canceling, Black 1 headphones
Excellent noise canceling. 87.4% ambient noise reduction. Business Traveler Magazine: 2009 Best in Business Travel, Winner of best noise canceling headphones. Mechanism of noise cancellation: 1. A built-in microphone of the headphone senses environmental noise. 2. A noise canceling circuit analyzes the environmental noise and sends an anti-noise wave with the inverse or opposite properties to the headphone. Foldable and swivel design for easy portability. Noise canceling headphone reduce unwanted ambient noise, providing a quieter environment to enhance your listening experience. Dual use capability allows option to listen to music with our without noise cancellation. Neodymium magnet delivers powerful sound. Supplied plug adaptor for easy connectivity to stereo or dual jack for in-flight music services. Specifications: Total noise suppression ratio (under the Sony measurement standard): Approx. 9 dB (equivalent to approx 87.4 % reduction of energy of sound compared with not wearing headphones). Sensitivity: 102 dB/mW (when power is on). Frequency response: 30-20,000 Hz. Cord: 1.5 m (4.9 ft). Power source: DC 1.5 V, 1 x R03 (size AAA) battery. Supplied accessories: Plug adaptor for in-flight use (single/dual) (may not be compatible with some in-flight music services), carrying pouch, Sony R03 (AAA) battery. The battery and the plug adaptor are stored in the carrying pouch. Headphones and carrying pouch: Made in Malaysia. Plug adaptor for in-flight use: Made in China. Battery: Made in Indonesia.
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