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儿童、老人定位器，有没有比较好的产品？

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  •   adminxc · Nov 27, 2018 · 2290 views
    This topic created in 2849 days ago, the information mentioned may be changed or developed.

    • 待机时间长、定位误差小是重要要素

    • 产品形态没有限制，手表、定位器都行

    • 价格无所谓，产品好就行~

    • 买过的大佬推荐几款啊~

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