New improved omnidirectional design gives you better quality sound during transmission, Highly improved the speech quality of hand free car kit communication system. | 3.5 mm standard plug, plug and play; 3 m (9 Feet) length cable for long distance transmission. Microphone can be picked up from the clip for the best sound effect | Adopting electret condenser cartridge with high sensitivity, low impedance, anti noise and anti jamming capability | Humanity design with U shape fixing clip, easy to install and reliable to use. Microphone can be glued with sticker to the wall, glass, car, door, etc. | With fast and accurate data transmission, which can guarantee the voice clearly and stably under kinds driving occasions