A touch pen comprising: a body; an antenna configured to receive at least one wireless signal from a mobile terminal; and a delay device configured to: receive the at least one wireless signal through the antenna; output at least one reflection signal, corresponding to the respective at least one received wireless signal, to the antenna after a predetermined time elapses, wherein the antenna is configured to transmit the at least one reflection signal to the mobile terminal, wherein the delay device further comprises: a location information provider configured to: receive a wireless signal, of the at least one received wireless signal, of a first frequency comprising location information of the touch pen recognized by sensing electrodes of the mobile terminal, and output a reflection signal corresponding to the wireless signal of the first frequency; and a status information provider configured to: receive a wireless signal, of the at least one received wireless signal, of a second frequency for recognizing status information of the touch pen, and output a reflection signal corresponding to the wireless signal of the second frequency, wherein the delay device comprises: an input transducer configured to receive a first electric signal corresponding to the wireless signal from the antenna and to output a first surface acoustic wave converted from the received first electric signal; and an output transducer configured to receive the first surface acoustic wave, to convert the received first surface acoustic wave into a second electric signal, to generate a second acoustic wave corresponding to the second electric signal, and to transmit the second surface acoustic wave to the input transducer, wherein the input transducer receives the second surface acoustic wave from the output transducer and converts the second surface acoustic wave into a third electric signal to output to the antenna. a body; an antenna configured to receive at least one wireless signal from a mobile terminal; and a delay device configured to: receive the at least one wireless signal through the antenna; output at least one reflection signal, corresponding to the respective at least one received wireless signal, to the antenna after a predetermined time elapses, wherein the antenna is configured to transmit the at least one reflection signal to the mobile terminal, wherein the delay device further comprises: receive the at least one wireless signal through the antenna; output at least one reflection signal, corresponding to the respective at least one received wireless signal, to the antenna after a predetermined time elapses, wherein the antenna is configured to transmit the at least one reflection signal to the mobile terminal, wherein the delay device further comprises: a location information provider configured to: receive a wireless signal, of the at least one received wireless signal, of a first frequency comprising location information of the touch pen recognized by sensing electrodes of the mobile terminal, and output a reflection signal corresponding to the wireless signal of the first frequency; and receive a wireless signal, of the at least one received wireless signal, of a first frequency comprising location information of the touch pen recognized by sensing electrodes of the mobile terminal, and output a reflection signal corresponding to the wireless signal of the first frequency; and a status information provider configured to: receive a wireless signal, of the at least one received wireless signal, of a second frequency for recognizing status information of the touch pen, and output a reflection signal corresponding to the wireless signal of the second frequency, receive a wireless signal, of the at least one received wireless signal, of a second frequency for recognizing status information of the touch pen, and output a reflection signal corresponding to the wireless signal of the second frequency, wherein the delay device comprises: an input transducer configured to receive a first electric signal corresponding to the wireless signal from the antenna and to output a first surface acoustic wave converted from the received first electric signal; and an output transducer configured to receive the first surface acoustic wave, to convert the received first surface acoustic wave into a second electric signal, to generate a second acoustic wave corresponding to the second electric signal, and to transmit the second surface acoustic wave to the input transducer, an input transducer configured to receive a first electric signal corresponding to the wireless signal from the antenna and to output a first surface acoustic wave converted from the received first electric signal; and an output transducer configured to receive the first surface acoustic wave, to convert the received first surface acoustic wave into a second electric signal, to generate a second acoustic wave corresponding to the second electric signal, and to transmit the second surface acoustic wave to the input transducer, wherein the input transducer receives the second surface acoustic wave from the output transducer and converts the second surface acoustic wave into a third electric signal to output to the antenna.