Product description: Heavy-duty speaker and microphone with PTT for tow-way radio Key specifications /special features: ·The microphone may be secured to the users lapel or shoulder ·Clear sound performance ·Comfortable holding ·With a 360-degree revolving stainless clip on the back. ·Solid, strong, and durable cable. ·Available for Icom, standard, Yaesu, Kenwood, Motorola, transceivers and others. Properties: Microphone: Sensitivity: -38dB± 2dB Impedance: 2.2K ohms Speaker: Sound pressure level: 83dB ±3dB Impedance: 32 ohms ± 15% Audio output: 2W