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Best Bone Conduction Headset With Mic For 1. Product Description Stereo Fancier Bone Conduction Sports Headphone transmits audio di...

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...Deaf and Persons Main Parameter It is a complete wireless alerting system that notifies deaf and persons of impor...

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... handset A speaker is an electroacoustic transducer which converts an electrical audio signal into a corresponding sound. It produces soun...

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