Volume Adjustment; Charging; Low Battery Warning; Checking The Battery Level - Sena Expand Boom User Manual

Outdoor bluetooth communication system

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Expand Boom

2.5 Volume Adjustment

You can easily adjust the volume by tapping the (+) Button or the (-)

Button. You will hear a beep when the volume reaches maximum or

minimum level. The volume is set and maintained independently at

different levels for each audio source even when you turn the headset

off and on.

The charging LED beside the charging port turns red while charging,

and turns to blue when the headset is fully charged. It takes about 2.5

hours to be completely charged. You can use the Sena Expand Boom

while it is charging.

When the battery is low, the blinking blue LED in stand-by mode turns

to red and you will hear mid-tone triple beeps and a voice prompt,

"Low battery".

When the headset is powering on, the red LED flashes rapidly

indicating the battery level.

4 flashes = High, 70~100%

3 flashes = Medium, 30~70%

2 flashes = Low, 0~30%

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