BlueAnt S4 True Handsfree - Manual (Page 5)

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5
Remove the Protective Cover
The plastic cover on your S4 is intended to protect it during transit. Please remove it before using your S4.
Charge Your S4
Your S4 has been given an initial partial charge to get you started,
but for best results we recommend you charge it using the supplied
USB cable and adaptor:
> You should charge the S4 whenever it announces that the battery is
Very Low .
> A full charge takes about 3-4 hours.
> During charging, the battery indicator light turns red.
> When the light goes out, the charge is complete.
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Battery
Indicator
Charging
Port