sell hands free earphone

SPECIFICATION :
1 Sensitivity -58~ -60db (choose available)
2 Output 30~100MV
3 Output impedance 5Kohm
4 Load Resistor 2~10Kohm
5 Operating voltage 2~5V
6 Current Consumption 0.3~0.6MV
7 Humidity test 40癈,RH90%,48hours
8 Frequency range 200HZ~3KHZ
9 Temperature test 50癈,48hours
10 Input power Rated 3mW Max. 5mW. 

EARPHONE SPECIFICATION :
1 Impedance 150ohm
2 Max input 40MW
3 Frequency Range 100~10000HZ
4 Dimensions 15.0 x 5.9mm