The device is a removable prosthetic that uses bone conduction through your teeth to amplify and transmit sound clearly to your inner ear.

该设备为移动式的假体，通过牙齿的骨传导向内耳放大、传递声音，使声音清晰。

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Now when he gets a call Prideaux can either hold the prosthetic arm up to his ear, put it on speaker phone, or take it out if need be.

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