A digital device (100; 310; 410; 710; 910; 1010) comprising: a motion sensor, wherein the motion sensor includes at least one of a gyroscope sensor, an acceleration sensor, a gravity sensor or a terrestrial magnetism sensor; a display unit; a wireless communication unit; and a processor configured to control the motion sensor, the display unit and the wireless communication unit, wherein the processor is further configured to: perform pairing with a smart watch (210, 220, 230; 320; 420; 720; 920; 1020), generate a notification (311; 411; 711; 911; 1011) notifying that an event has occurred, transmit a notification (321; 421; 721; 921) of the event to the smart watch paired with the digital device, wherein the event includes a first event, a second event, and a third event, which occur in due order, wherein the notification includes a first notification corresponding to the first event, a second notification corresponding to the second event and a third notification corresponding to the third event, characterized in that the controller is further configured to: display detail information (413; 713; 913; 1013) for a latest event among the first event, the second event and the third event in response to detection of a predetermined motion using the motion sensor within a predetermined period of time (Tr) that starts from a time when a signal related to the notification (321; 421; 721; 921) of the event is received from the smart watch paired with the digital device, and display occurrence information for the first event, the second event and the third event in response to reception, after the predetermined period of time, of an input signal for turning on the display unit. a motion sensor, wherein the motion sensor includes at least one of a gyroscope sensor, an acceleration sensor, a gravity sensor or a terrestrial magnetism sensor; a display unit; a wireless communication unit; and a processor configured to control the motion sensor, the display unit and the wireless communication unit, wherein the processor is further configured to: perform pairing with a smart watch (210, 220, 230; 320; 420; 720; 920; 1020), generate a notification (311; 411; 711; 911; 1011) notifying that an event has occurred, transmit a notification (321; 421; 721; 921) of the event to the smart watch paired with the digital device, wherein the event includes a first event, a second event, and a third event, which occur in due order, wherein the notification includes a first notification corresponding to the first event, a second notification corresponding to the second event and a third notification corresponding to the third event, perform pairing with a smart watch (210, 220, 230; 320; 420; 720; 920; 1020), generate a notification (311; 411; 711; 911; 1011) notifying that an event has occurred, transmit a notification (321; 421; 721; 921) of the event to the smart watch paired with the digital device, wherein the event includes a first event, a second event, and a third event, which occur in due order, wherein the notification includes a first notification corresponding to the first event, a second notification corresponding to the second event and a third notification corresponding to the third event, characterized in that the controller is further configured to: display detail information (413; 713; 913; 1013) for a latest event among the first event, the second event and the third event in response to detection of a predetermined motion using the motion sensor within a predetermined period of time (Tr) that starts from a time when a signal related to the notification (321; 421; 721; 921) of the event is received from the smart watch paired with the digital device, and display occurrence information for the first event, the second event and the third event in response to reception, after the predetermined period of time, of an input signal for turning on the display unit. display detail information (413; 713; 913; 1013) for a latest event among the first event, the second event and the third event in response to detection of a predetermined motion using the motion sensor within a predetermined period of time (Tr) that starts from a time when a signal related to the notification (321; 421; 721; 921) of the event is received from the smart watch paired with the digital device, and display occurrence information for the first event, the second event and the third event in response to reception, after the predetermined period of time, of an input signal for turning on the display unit.