A direction display device comprising: a wireless communication section to perform near field wireless communication with an external positioning device ; a barometric pressure measuring section to measure barometric pressure; a converting section to convert the barometric pressure measured by the barometric pressure measuring section into an altitude value; an orientation measuring section to measure an orientation of a specified direction of the direction display device; an operation section to receive an input operation of registration instruction of the measured orientation by a user; a display section to display information; a registration controlling section to obtain current positional information by the wireless communication section from the external positioning device and to store the current positional information as registered positional information while correlating the current positional information to the registered measured orientation information, when said input operation of registration instruction has been detected; a registration position extracting section to extract the registered positional information when a difference between the altitude value converted by the converting section and an altitude value obtained from the registered positional information stored is within a predetermined range; and characterized by a display controlling section to cause, when one or more pieces of the registered positional information has been extracted, the display section to display a direction corresponding to the registered measured orientation information and a position corresponding to the registered positional information extracted. a wireless communication section to perform near field wireless communication with an external positioning device ; a barometric pressure measuring section to measure barometric pressure; a converting section to convert the barometric pressure measured by the barometric pressure measuring section into an altitude value; an orientation measuring section to measure an orientation of a specified direction of the direction display device; an operation section to receive an input operation of registration instruction of the measured orientation by a user; a display section to display information; a registration controlling section to obtain current positional information by the wireless communication section from the external positioning device and to store the current positional information as registered positional information while correlating the current positional information to the registered measured orientation information, when said input operation of registration instruction has been detected; a registration position extracting section to extract the registered positional information when a difference between the altitude value converted by the converting section and an altitude value obtained from the registered positional information stored is within a predetermined range; and characterized by a display controlling section to cause, when one or more pieces of the registered positional information has been extracted, the display section to display a direction corresponding to the registered measured orientation information and a position corresponding to the registered positional information extracted. <EOS>