Samsung HM7000 - Manual (Page 11)

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English
Never make or receive calls while charging, always disconnect your headset •
from the charger and answer the call.
To save energy, unplug the charger when not in use. The charger does not
•
have a power switch, so you must unplug the charger from the electric
socket when not in use to avoid wasting power. The charger should remain
close to the electric socket and easily accessible while charging.
The socket-outlet shall be installed near the equipment and shall be easily
•
accessible.
Checking the battery level
To check the battery level, press and hold the Volume down button and the Talk
button at the same time. 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