Discovery 925/975: Range
To maintain a connection, keep your earpiece within 33 feet (10 meters) of the phone. If there are obstacles between your headset and the phone you may experience interference. For optimal performance, place your headset and phone on the same side of your body.
Audio quality degrades as you move out of range. When you are far enough away to lose the connection, you will hear a high tone in the headset and it will attempt to reconnect for 60 seconds. If you move back in range, you can manually connect by pressing the call control button. Note: Audio quality is also dependent upon the device with which the headset is paired.