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Circle-Wristband is a wristband that prevents children from being lost by monitoring the distance. When the distance between the two wristbands exceeds the set distance, the wristband will vibrate each other. Therefore, the child can only be in the range of vision set by the parents. Internal activities, so that there is no child lost, fundamentally solve the problem of children lost.
Yangtze University
Jingzhou, China
Yanlong Zhao,
Yangtze University
Lisha Xu,
Yangtze University