If you're not hearing audio from your headset when using the wireless receiver, try the following suggestions:

• Connect the headset to a USB port with the charging cable — it may not have enough battery power.
• Make sure you have the H600 selected as the audio output device (see your computer's documentation for help).
• Check that the application you're using is configured to use the headset as its audio output device (see the application's documentation for help).
• Make sure the receiver is connected to a USB port that isn't behind any large objects (ex. a desk or desktop PC).