Check to make sure that the headset is charged and turned on:

1. Cycle the power switch from Off to On. If the headset is charged, a voice prompt will announce the amount of battery remaining.
2. If there is no announcement, charge the battery for at least 15 minutes then repeat step 1.
3. If no response, perform a factory reset using one of the following:
   • Long press the Call Answer / End (CAE) button and the Volume button for five seconds.
     

     1 — Call button (answer, end, and reject calls) 2 — Volume up, down

   • In the Logi Tune app under Settings > About the Headset, click Factory Reset.