Plantronics Explorer 390 User Guide - Page 12

Headset Controls Transfer a call from While on a call, press and hold the call control headset to phone button until you hear a single long low tone. Transfer a call from phone to headset Check battery charge Turn Multi-Point on or off (available on Explorer 390 series only) Hard reset While on a call, press and hold the call control button until you hear a single short low tone. While the headset is on (but not on a call), press and hold the call control and volume buttons. The indicator light will blink red once for a full battery, twice for 2/3 charge, or three times for 1/3 charge. While the headset is off, press and hold the call control and volume buttons. The indicator light will flash blue twice when Multi-Point turns on, or once when it turns off. While the headset is on (but not on a call), press and hold the call control button while connecting the headset to any charging accessory. Range To maintain a connection, keep your headset within 33 feet (10 meters) of the Bluetooth device. If there are obstacles between your headset and the device, 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 hear a high tone in the headset. Note The headset attempts to reconnect for 30 seconds. If you move back in range after 30 seconds pass, you can manually reconnect by pressing the call control button. note Audio quality is also dependent upon the device with which the headset is paired. 8