Yezz Z51 Manuel page 86

Do not expose your device to direct sunlight, like
on your car's dashboard, for example.
In case of overheating do not use the device.
Be careful when using the device while walking.
Do not subject the device to severe impact or drop
it from high position, it could cause damages or
malfunctions.
Do not disassemble, modify or fix the device by
yourself.
To clean the device use a clean and soft rag.
Do not use any chemical product or detergent.
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