Mic size: 6*2.7mm Mic sensitivity: -38 ±3dB Micdirectivity: omnidirectional Mic impedance: 2.2K Speaker diameter 40mm Speaker frequency range: 20Hz~20KHz Speaker impedance: 32 �?�±15% Speaker sensitivity: 110 �?�±3dB Wire length: 2.0m Working current: 100MA Working voltage: DC5V Headphone connector: 3.5mm 4PIN (1 plug) + USB/ 3.5mm 4PIN (1 plug) Color: black, black orange, black green, black blue
