Samsung HM1800 用户手册

7

Never make or receive calls while charging, always disconnect your headset 

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from the charger and answer the call.
To save energy, unplug the travel adapter when not in use. The travel adapter 

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does not have a power switch, so you must unplug it from the outlet when not 

in use to avoid wasting power. The travel adapter should remain close to the 

socket when in use.

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 colors:

Above 80%

Blue

80 ~ 20% 

Violet

Below 20%

Red