NOVELTY - Headphones (100) comprise speaker part (101) which generates sound, and thermoelectric sensor switch. Switch is equipped with thermoelectric power generation part which has thermoelement, and switch control part electrically connected with thermoelectric power generation part. The thermoelectric power generation part has thermal radiation part and heat storage part (14) linked to thermo-element, and generates electromotive force from the temperature difference of thermal radiation part and heat storage part. The switch control part is equipped with detection part.    USE - Headphones.    ADVANTAGE - The headphone is reliably controllable while attaining power-saving.    DETAILED DESCRIPTION - Headphones (100) comprise speaker part (101) which generates sound, and thermoelectric sensor switch. Switch is equipped with thermoelectric power generation part which has thermoelement, and switch control part electrically connected with thermoelectric power generation part. The thermoelectric power generation part has thermal radiation part and heat storage part (14) linked to thermo-element, and generates electromotive force from the temperature difference of thermal radiation part and heat storage part. The switch control part is equipped with detection part which electrically connects with thermoelectric power generation part, and control part electrically connected with detection part. The detection part detects electromotive force that generates thermoelectric power generation part, and sends detection signal of the electromotive force to the control part. The control part sends control signal to apparatus power supply part electrically connected to switch control part based on detection signal sent, and it controls the apparatus power supply part.    DESCRIPTION OF DRAWING(S) - The drawing is perspective view illustrating a headphones provided with thermoelectric sensor switch.    Heat storage part (14)    Headphones (100)    Speaker part (101)    Connection part (102)