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4. POWERING ON/OFF AND CHARGING
4.1 Powering On
Press the (+) Button and the (-) Button at the same time for 1 second to power on. The blue LED turns on and you will
hear ascending beeps and "Hello".
4.2 Powering Off
Tap the (+) Button and the (-) Button simultaneously. The red LED turns on for about 2 seconds until it turns off completely
and you will hear "Goodbye" and descending beeps.
4.3 Charging
●
To charge the SMH3, use the USB Power Cable included in the package by plugging into computer's USB port or
USB wall charger. USB wall charger is not included in the package, but you can use any USB wall charger in the
market.
●
The USB Power Cable is also used for firmware upgrade of the SMH3.
●
You can use any of the standard micro-USB cables which is mostly adopted by smartphones and general Bluetooth
headsets manufacturers.
●
The LED turns on red while charging, and turns to blue when the headset is fully charged. It takes about 2.5 hours to
be fully charged.
●
A cigarette charger for the SMH3 is separately available as an optional accessory but you can use any micro-USB
car charger in the market.*
4.4 Low Battery Warning
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 saying "Low battery".
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*please contact Sena regarding locally approved agencies Sena accepts.
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SMH3
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