Unisurf USFUT4210DCWHT, Руководство пользователя

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This manual contains important safety precautions and information of correct use.
Please be sure to read this manual carefully before use so as to avoid any accidents.
Do not place the product in hot, wet or dusty environment, especially in Summer, do not leave the
product inside a car with all windows closed.
Avoid dropping, impacting or shaking the product violently, otherwise it may cause damages or
malfunctions. Select a proper volume to avoid ear problem when using earphones.
Be sure to use the provided chargers and accessories in the package.
Be sure to charge the product when the following situations take place,
- The battery icon shows lower or empty.
- Operation keys do not respond properly.
- The device shows on the top right corner.