new developed noise cancelling headphone
Detailed Product Description
| 1) frequency response: 20Hz-20KHz |
| 2) active noise attenuation: 100-1000Hz |
| >15dB at 300HZ |
| 3) sensitivity: 102dB +/- 2 db at 1,000 Hz |
| 4) Max. input power: 500mW |
| 5) driver unit: 40mm |
| 6) impedance: 40 Ohms at 1,000 KHz |
| 5) Jack size: 3.5mm, 6.3mm and |
| airplane jack |
| 6) Cord length: 2.1m |
| 7) power supply: 2xAAA 1.5V batteries |
