Noise Reduction Headphone(WS-NC-986)

Features
Optimum noise cancelling
High quality Stereo Headphone
One battery and over 40 hours battery life time
Easy operation,volume adjustable
Foldable

Specification
Frequency response:20～20,000Hz
Active Cancellation:
20～1500Hz and≥17dB between 150-300Hz
Power:1×1.5v AAA Battery