심심풀이로 해본 청력테스트....!! 20대로 나왔다. You are about 20 years old The teen repellent will no longer foil you, but you can still hear some pretty high tones. The highest pitched ultrasonic mosquito ringtone that I can hear is 16.7kHz Find out which ringtones you can hear! http://www.ultrasonic-ringtones.com/