Size: 20*20*17mm
<br />Wire diameter: 2mm
<br />Wire size: 40.9.5.5mm
<br />Bluetooth: Bluetooth 4.1
<br />Color: silver, black
<br />Audio range: 20HZ-20KHZ
<br />Impedance: 16 ohm
<br />Sensitivity: 109dB
<br />Duration: 10 hours
<br />Charging time: 1-2 hours
<br />Voice function: call, music, etc.
<br />Noise reduction: CVC6.0