nedis HPBT2450BK Quick Start Manual page 12

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WARNING
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Ensure you have fully read and understood the instructions in this document
before you install or use the product. Keep the packaging and this document
for future reference.
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Only use the product as described in this document.
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Do not use the product if a part is damaged or defective. Replace a damaged
or defective product immediately.
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Do not drop the product and avoid bumping.
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This product may only be serviced by a qualified technician for maintenance
to reduce the risk of electric shock.
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Do not immerse the product in water or other liquids.
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Using earphones in both ears while participating in traffic is discouraged and
may be illegal in some areas.
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The product is delivered with a partially charged battery. For optimal battery
life, fully charge the battery before using the product for the first time.
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Some wireless products may interfere with implantable medical devices and
other medical equipment, such as pacemakers, cochlear implants and hearing
aids. Consult the manufacturer of your medical equipment for more
information.
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Do not use the product at locations where the use of wireless devices is
prohibited due to potential interference with other electronic devices, which
may cause safety hazards.
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Only use the provided USB charging cable.
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Do not leave the product on prolonged charge when not in use.
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This product is equipped with multiple non-removable internal batteries. Do
not attempt to replace the batteries yourself.
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During charging, the product must be placed in a well-ventilated area.
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Only power the product with the voltage corresponding to the markings on
the product.
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