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Hearing umbrella is for a person, having hearing impairment or listening to music with earphones on a rainy day.
Distance-sensing device is installed at the end of umbrella frame for a person, who can't pay attention to surrounding
environment much. It keeps the person in safety by letting him/her know the fact that objects like cars or motorcycles
are coming faster than a regular speed from side or back, which the person can't check easily because of umbrella with vibration and lighting.
Seoul, South Korea