Sony MDR-NC40 Noise Canceling Headphones

Sony Updated: 2008-07-30 RSS
Sony MDR-NC40 Noise Canceling Headphones

Shut 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

* Cord : 4.9 foot OFC litz cord (Including battery box)
* Headphone Type : Closed, dynamic

* Battery Life (Approx.) : up to 40H (with alkaline battery)2
* Battery Type : DC1.5V, 1 size AAA battery
* Power Handling Capacity : 50mW

* Design : Premium over the head, Noise canceling
* Headband : Adjustable and Foldable
* Magnet : Neodymium
* Type of Use : Noise canceling

* 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)