Insulin knowledge: Unused insulin can be stored at 2-8 C for 2-3 years. Used insulin can be stored at 25 C for 6 weeks. Preventive measures: If using an external power source for a long time, please remove the battery, overload, and leakage. If the battery has not been used for more than a week, please remove it to avoid overcharging. 3. Do not use the battery for a long time, charge it every three months to avoid overcharging. Product specifications: Humidity range: 2-18 ? Net weight of the product: 2 kilograms Product appearance size: 22 10 9 centimeters Lithium battery capacity: 10200mah Charging time: 5-7 hours on, 4-5 hours off Car input voltage: 12V cc Home voltage: 220VCA Power: 5 watts There is something inside the box 1 medical refrigerator 1 transport bag 1 2 pile 1 car plug 1 home adapterApplication: Small portable medical refrigerated bags are lightweight, compact, and easy to carry. It can be placed in one hand and can still store all medical supplies. It is easy to carry in your luggage and is perfect for short trips and camping, travel, and emergency situations. Ultra quiet operation: Using high-quality brushless fans, normal operation is below 30 decibels. Its functions are quieter and more long-lasting than before, allowing you to enjoy a quiet and comfortable sleep. Intelligent rapid cooling: Using imported electric cooling cores, when the refrigerator temperature reaches the set temperature, it quickly cools 2-8 C (ambient temperature 32 C), and the machine will adopt an energy-saving mode to effectively protect the substrate and extend product life. Large capacity: The design of this medical refrigerator provides a convenient way to store drugs (such as insulin, interferon, growth hormone, vaccines, eye drops, etc.) in a safe temperature battery. Convenient, suitable for homes, offices, and airplanes. Product specifications: Small and lightweight, exquisite and beautiful. Large screen LCD display, clear reading of cooling time and temperature. Cooling space (length x width x height): 175mm 55mm 40mm, size (length x width x height): 230 110 110mm.