The electronic apparatus includes a submergence detector for detecting submergence of the electronic apparatus in the water and retrieval thereof, a light-emitting device provided within an enclosure of the electronic apparatus, an illumination circuit for lighting the light-emitting device when an illumination signal is input, a controller for causing the light-emitting device to blink by generating the illumination signal at prescribed blinking intervals at least during a period from a point of submergence to a point of retrieval of the electronic apparatus and inputting the illumination signal to the illumination circuit, and a power control circuit for activating the controller by supplying electric power thereto if the electric power is not supplied to the controller when the submergence detector detects submergence.