For: recording、 UC、 YY、 QQ chat、 chat with other networks and so on.Use: Notebook computer desktop computers tablet、 smart phones and other TV karaoke OKPhone tablet: the need to use with the adapter cable. Directional characteristics (Directivity): single pointFrequency response (Frequency response): 40-16500HzSensitivity (Sensitivity Reduction): - 46dB / Pa ¡À 3dNoise ratio S / N Ratio: more than 56Db (More than 58Db)Impedance (Impedance): ¡Ü1.5KStandard operating voltage (Standand Operation Voltage): 3.0VSpecifications: 150 cm long line clip bracket with wheat