It's used at the place where JJY standard frequency and time signal waves doesn't reach an electric wave clock.
Whether a headphone is installed and a cord is wound around an electric wave clock brings a loudspeaker of the terminal body close to an electric wave clock directly and starts this application, and when the volume is maximized, JJY standard frequency and time signal waves is sent falsely. When the electric wave clock is made a reception mode in this state, I synchronize in 2-3 minutes.
I don't sometimes synchronize well by the model (the kind of loudspeakers), so please accept it.
※ When it's sent from a loudspeaker, the sound of 13kHz comes out. A person sensitive to sound and the person who comes to feel sick cut down use, please. When quartz and a mechanical clock bring smart phone close again, there is a possibility which is magnetic and breaks down, so please don't use. I don't account at all about damage by our application.