This ultrasonic white cane is made by 4-section lightweight aluminum tubes. It has an ultrasonic sensor at the front part of the handle. Ultrasonic sensors detect the obstacles within 3 meters in distance horizontally and vertically. The shaft is covered in a reflective white and red color able to increase visibility. There is a beeping sound and vibration when meeting the obstacles. The closer the obstacle is, the more frequent it is. There are puddles, high temperature and fire in front, which can be alarmed by voice in time.