Plantronics DISCOVERY 665 User Guide - Page 7

POWERING 1. Turn on the headset by pressing and holding the call control button until the indicator light glows blue. If you are wearing the headset, you will hear a beep when the power turns on. The indicator light will flash blue every 5 seconds when the power is on. 2. Turn off the headset by pressing the call control button for 6-8 seconds until the indicator light glows red or until you hear the beep. The indicator light remains unlit when the power is off. CHARGE LEVEL INDICATION When the headset is turned on, the indicator light will briefly show the headset charge level. 3 red flashes = greater than 2/3 battery charge 2 red flashes = 1/3 to 2/3 battery charge 1 red flash = less than 1/3 battery charge 7