Abstract: An ear mike phone as a hand-free device is disclosed, in which switches and the like for supplying a power to the mike and the speaker are efficient, and therefore, the driver's driving attention can be prevented from being dissipated. The ear mike phone includes a main body part connected to a mike and a speaker, and connected to a cable to be connected to a hand phone. A switch is installed on an adjustment board of the main body part, for activating the mike and the speaker. A switch control part is provided, with its one side contacting to the switch, and with its another side projecting from a side of the main body part. Upon activation of the switch, the main body part is more firmly settled into the ear, and therefore, the ear mike phone is operated in a sure manner.