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When making or receiving a call using your headphones, your voice and other sounds are picked up via the headphone microphone Sidetone function.
Your voice and the surrounding sounds will all be picked up through the headphone earpieces. Hearing them is not a malfunction.
- The volume level and sensitivity of the Sidetone function cannot be adjusted, and the function cannot be turned off.
- When using the headphone microphone, make sure that it is not too close to your mouth. If the receiver is too close, it may cause an echo or make your voice too loud (applies to WI-C200/C310 only).