A tilt adjusting image including a captured image 113 that is obtained by capturing a wearer wearing a spectacle-type electronic device 1, and a horizontal line image 115 indicating a horizontal direction identified by a tilt identification part 101, is displayed. The wearer adjusts a position of the spectacle-type electronic device 1 by a wearer's hand or the like while viewing the tilt adjusting image so that the spectacle-type electronic device 1 becomes horizontal. When the wearer judges that the spectacle-type electronic device 1 has become horizontal, the wearer operates an operation part 85 and inputs a calibration instruction. When the calibration instruction is input, the calibration instruction is transmitted to the spectacle-type electronic device 1.
