Specifications：
1. Direction features: Unidirectional
2. Sensitivity:-41dB(+-1dB)
3. Impedance:≤2.2KΩ
4. Connector pin: φ3.5mm
5. Cable length: 2m
Main features:
1. Stylish, ergonomic and comfortable design;
2. Import IC make voice more clear
3. 3.5mm Connector suit for many device
