Stereo Bluetooth with Active Noise Cancelling

1)Bluetoooth Version:Qualcomm QCC3031

Noise cancelling:ADI AUDU1787

1) frequency response: 20Hz-20KHz

2) active noise attenuation: 100-1000Hz

>10dB 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

6) impedance: 40 Ohms at 1,000 KHz

7) power supply: 650 am batteries

* Charging time: 2 hours

* Charge port: Micro USB Type B

* Wireless Range: 10m( Free space)

* Build-in Microphone: Yes

* Microphone Sensitivity: -42 dB

* Headphone Type: Full Size

* Ear Coupler Type: Earmuffs