description features: ~ using expediently, no installation, can be used for most vehicles, equipped with wireless earphone and wireless pick-up clip, n tangle with any cable. ~ universal wireless pick-up clip design, it can be used for all kinds of the mobile phones. ~ to effectively prevent the damage of electronic wave to user¡¦s brain. ~ freely switch between the wireless earphone and speaker, ensure your private talk. ~ to effectively control the noise caused by emi. ~ standard cigarette plug for power can be adjusted angle, plug and play. ~ extendable power socket: you can choose expansion accessories of the cigarette socket, convenient to be used for other equipment of the car kit. component : a. standard cigarette plug b. wireless ear piece c. volume control d. button for adjusting angle e. wireless mic clip f. led & on/off switch