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The blind usually know time through clock voice. This watch is specially designed for the blind. Due to their stronger touch than the normal, twelve scales on the surface are in the form of pits, while the hour hand and minute hand are in the form of raised dots. In this way, the blind can know time accurately. Besides, this product can identify blind tracks via sound waves. The pits same as blind tracks are available on its back to allow the blind to know the front road conditions quickly and accurately.
HUBEI POLYTECHNIC UNIVERSITY