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When the blind use walking stick, they need to rely on wrist strength with his stick and hit the ground to feel road. A long time will cause the fatigue of the wrist during this process.
The top of “CARE”is an elastic ball. As the walking stick touch the ground , it can automatically bounce. Users only need to control the direction of left and right to ease the fatigue of the wrist.
Wei Shang Chunlei Shi Tianyu Li Jianfang Zhang