1. How to charge the product? The mobile power supply or USB charger with output voltage above 5v1a can be used for charging
2. How long can the product be used when it is fully charged? The product can be used 140 times in 5 minutes
3. Is the UV light on? 1. Check whether the product power switch is on. If the switch is in the off position, turn it to the on position.
2. Whether the product is installed correctly can be installed according to the installation direction indicated at the bottom of the product.
4. Product sterilization time? The product will work for 5 minutes at a time and automatically after 5 minutes.
5. Product sterilization principle? the ultraviolet lamp radiates the ultraviolet light with a wavelength of 253.7nm, which destroys the molecular structure of DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) in the cells of biological organism, resulting in the death of growth cells and / or the death of regenerated cells to achieve the sterilization effect.