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NOTICE
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No striking from any hard object.
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Stop using in thunderstorm weather.
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Keep away from electric or magnetic field.
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Don't stain the device by chemicals.
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No disassembly to the device.
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Keep away from high temperature, freezing, dusty or
moist environment.
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Lower sound suggested, to keep away from hurting
your ears and making noise.
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Do not leave the device inside a car with all windows
closed.
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Do not flash firmware privately without professional
guidance. The manufacturer is not responsible for
breakdown of the device caused by user's private
firmware flashing.