||1. Active noise cancelling technology to enhance the power of noise filtering.
2. Block the external noise to offer a superb listening experience.
3. Suitable for users in noisy environment like subway, airline, highway, etc
4. Noise cancelling and common wired headphone available
5. Driver unit: 40mm dynamic speakers
6. Impedance : 32¦¸¡À10%
7. Frequency response : 20Hz - 20K Hz
8. Reduction level: >16dB at 300Hz
9. Sensitivity: 102 dB¦Ìv at 300Hz
10. Plug: 3. 5mm stereo plug
11. Power requirement: 2 ¡Á AAA batteries (not included)