Key Specifications/Special Features: Noise canceling boom microphone is excellent With coiled PU cable for retractable use Dual speakers for increased sound and clarity, fit into the ear well for all headsets PTT button (included) secures to handlebars and controls the two-way functions of radios Works for full face, open face and flip face Available for Icom, standard, Yaesu, Kenwood and Motorola transceivers and other brands Primary competitive advantages: Packing Price Product features Prompt delivery Service Properties Microphone: Sensitivity: -38dB, +/-2dB Impedance: 2.2K ohms Speaker: Sound pressure level: 83dB, +/-3dB Impedance: 32 ohms, +/-15% Audio output: 1W