To provide an effective notification even when a circumstance for notification is inappropriate at the time of notification.

Under an inappropriate circumstance for a notification of the predetermined function (navigation function, schedule function, alarm function, and incoming function) at the time of notification timing, a cellular phone 1 allows a wristwatch 2 side to make the notification. The inappropriate circumstance for notification is, for instance, that the screen is hard to be seen because of too bright circumstance, the cellular phone 1 is housed in a bag or in a pocket of clothing for a predetermined time period or more, a non-operational state continues for a predetermined time period or more in a closed style, the notification sound is hard to be heard, or the like.

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