factory direct selling smart wireless bluetooth audio watch
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B90 smart audio watch supports wireless radio, card insertion playback, and Bluetooth connection. B90 uses a dual MIC balanced noise reduction algorithm to effectively reduce environmental background noise, with a volume of 80dB, which is three times the hands-free volume of a mobile phone and more than five times that of a smartphone.![](http://img1.yiwugou.com/i004/2016/09/21/00/b5df721a9c31488f9c5c6f02ffee4bb8.jpg@710w_710h.jpg)
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