Sony MDR-NC40 Noise Canceling Headphones (Black)

• Design: Soft and comfortable on-ear fit with pressure-relieving urethane ear cushions.
• Noise reduction: Reduces noise up to 90% (10 dB at 300 Hz) when noise canceling circuit is switched on
• Passive function: The headphones can operate as passive headphones when the noise canceling circuit is not activated.
• Ideal for: Loud, noisy environments planes, trains, buses, work or dorms.
• Plug adapter: A supplied plug adapter connects directly to stereo or dual jack of in-flight music services 

Sony MDR-NC40 Noise Canceling Headphones Relax your mind with a soothing, uninterrupted listening experience. These lightweight and comfortable noise canceling headphones deliver tranquility no matter where you are.