Tech
(Jhaan Elker/The Washington Post)
This watch can help the blind see by using echolocation
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Sunu has developed a wristband that emits a silent, high frequency sound and vibration to alert the visually impaired of obstacles within their environment.
Sunu has developed a wristband that emits a silent, high frequency sound and vibration to alert the visually impaired of obstacles within their environment.
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