Sony MDR-NC40 Noise Canceling Headphones
Sony Updated: 2008-07-30 RSSShut out up to 80% of the ambient noise around you with the MDR-NC60 noise canceling headphone. Great for work, traveling or just when you're trying to sleep in a loud place, they provide a calming atmosphere no matter where you are. The pressure-relieving cushion offers premium comfort, and the lightweight, folding design makes storing them a breeze. Includes a premium travel case and "AAA" batteries.
High quality noise canceling
Range of active noise attenuation more than 14dB at 300 Hz
Audio pass through even without battery (no noise cancelation without battery)
Premium travel case
Product Specifications
Weights and Measurements
* Cord Length (Approx.) : 4.9 foot (1.5m) including battery box
* Weight (Approx.) : 3.8 oz. (107g)-without battery, 4.2 oz (119)- with battery
Hardware
* Cord : 4.9 foot OFC litz cord (Including battery box)
* Headphone Type : Closed, dynamic
Power
* Battery Life (Approx.) : up to 40H (with alkaline battery)2
* Battery Type : DC1.5V, 1 size AAA battery
* Power Handling Capacity : 50mW
General
* Design : Premium over the head, Noise canceling
* Headband : Adjustable and Foldable
* Magnet : Neodymium
* Type of Use : Noise canceling
Audio
* Driver Unit : 30mm diameter, dome type
* Frequency Range : 50- 1,500Hz (active noise attenuation)
* Frequency Response : 14 - 22,000Hz
* Impedance : 68 ohms at 1kHz (on); 30 ohms at 1kHz (off)
* Noise Level : ON/OFF switch on battery box
* Sensitivity : 102dB/mW (on); 100dB/mW (off)
Operating Instructions
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