Wristwatch, mobile terminal, and communication reminding system and method

A communication reminding system, comprising:

• a mobile terminal, comprising:
• a display device;
• a contact person selecting interface providing a contact person list displayed on the display device, the contact person selecting interface configured to be provided to select one or more contact persons from the contact person list;
• a storage unit configured to store the one or more contact persons selected through the contact person selecting interface as a selected contact person data;
• a comparison unit configured to compare an entity with the selected contact person data when an incoming call or a new message is received from the entity;
• and
• a wireless signal transceiver configured to transmit a prompt requesting signal using wireless communication when the comparison unit determines that the entity sending the incoming call or the new message is contained in the selected contact person data;
• and
• a wristwatch, having a dial, at least one physical indicator, and a movement, the dial having physical scales disposed thereon, the at least one physical indicator disposed above the dial, the at least one physical indicator driven by the movement and cooperating with the physical scales on the dial to show the time, the wristwatch further comprising a functional module comprising an electronical connecting substrate and a packaging body disposed on the electronical connecting substrate, the functional module at least comprising:
• a wireless communication module communicating with the wireless signal transceiver of the mobile terminal using the wireless communication to receive the prompt requesting signal transmitted from the mobile terminal;
• a processor unit receiving the prompt requesting signal from the wireless communication module and generating a control instruction according to the prompt requesting signal;
• and
• a prompting device controlled by the control instruction of the processor unit, configured to give out the prompt message when receiving the control instruction,
• wherein the wireless communication module, the processor unit, and the prompting device are packaged into the packaging body as a monolithic packaging structure on the electronical connecting substrate.