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This symbol refers to the batch code of the device.
This symbol indicates the USB connector.
This symbol means that the device uses a Lithium-ion Polymer battery.
This symbol means made in China.
This symbol means to keep the device away from direct sunlight.
This symbol means the device's upper and lowers operating temperatures
can be safely used.
This symbol means the upper and lower operating humidity at the device
can be safely used.
This symbol means that the cardboard packaging that the device came in
can be recycled.
Type BF Applied Part, B indicates it is used for the body, and F indicates that
it is not connected to the mains voltage.
Unique Device Identifier.
21
SAFE - EASY TO USE - EFFECTIVE
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