Mannermode Earphone / Earphone

This product has 'Volume perception system' that is controlled by earphone, and microphone below it measures decibel(Db). It is activated by pressing ‘manner mode’ button for 3 seconds. And it compares outer noise decibel and loudness of music in manner mode, so user may have proper volume control not to make a noise in public. I propose 'manner mode earphone' that has user friendly, fast and smart ‘Volume perception system' in this society of etiquette.