Medical Insulin Cool Box, Mini Rechargeable Storage Refrigerator with LCD Display Screen, Travel Car Refrigerator for Car, Travel, Home, Intelligent Constant Temperature and Rapid Cooling (Batteries Not Included)

No water is allowed inside the machine to avoid contact with liquids. The ventilation holes on the bottom and sides should be kept free of air blockage. When loading portable backpacks, the ventilation holes in the backpack must be aligned with the cooling holes. It is strictly forbidden to place the refrigerator in a sealed bag, as this will cause poor airflow, increase the temperature inside the case and damage the medicine.