||1. Active noise cancelling technology to enhance the power of noise filtering.
2. Block the external noise to offer a superb listening experience.
3. Smart design, convenient for traveling users especially for users in noisy environment like subway, airline, highway, etc.
4. Noise cancelling and common wired headphone available
5. Frequency response : 20Hz - 20KHz
6. Reduction level: >13dB at 300Hz
7. Sensitivity: 102 dB¦Ìv at 300Hz
8. Plug: 3. 5mm stereo plug
9. Power requirement: 1 ¡Á AAA batteries(not included)