Samsung 90308 User Manual page 9

Checking.the.battery.level
At the same time, press and hold the Volume down button and the Talk
button. Depending on the battery level, the indicator light flashes 5
times in one of the following colours:
Battery.level Indicator.light.colour
Above 80% Blue
80 ~20% Violet
Below 20% Red
When.the.battery.power.is.low
The headset beeps and the indicator light flashes red. Recharge
the battery. If the headset powers off during a call, the call will be
automatically transferred to the phone.