To enable using alarm function without disturbing others with noise and waking the user up at a set time in a train and the like by providing the earphone with a sounding function of alarm of a timer alarm.

A timer part 1 is provided with a time setting function and a generation and transmission function of electric signal for generating alarm sound from a earphone part 3. The earphone part 3 having the sounding function of alarm is mounted on the timer part 1 by way of an electric signal code 2. By using the time setting function provided in the timer part 1, the time for alarming is set and the earphone is put in the ears of the user. By this, waking up by the alarm sound from the earphone part 3 generated at the set time becomes possible. If the alarming function of the alarm is replaced by the alarm function by vibration of a vibrator, waking up of only the user of the timer alarm by the timer alarm effect becomes possible without scattering noise around.