Sony MDR-NC7/BLK Noise Canceling Foldable Stereo Headphone

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
# 5 FT cord length, approximate (8-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
# 3 FT Extension cord
# Airplane plug adapter
# Carrying pouch
# Operating instructions and 90 Days SONY Warranty Card