Refrigerated drugs are prone to spoilage at high temperatures, and spoiled drugs may harm your body. Therefore, you need a portable medication refrigerator to help you solve the problem of having to refrigerate medication outdoors. Suitable for your short to medium distance travel. Insulin knowledge: Unused insulin can be stored at 2-8 C for 2-3 years. The insulin used can be stored at 25 C for 6 weeks. Product details: Size: 22.5 10.3 9.5 cm Internal dimensions: 20 9 4 centimeters Net weight: 1.8 kilograms Material: ABS Voltage: 12 V for cars 110 V to 220 V for household use Temperature: 2 ? 18 ? Packaging list: Host 1, CA adapter 1, car charger 1, USB charging cable 1(Widely used) can contain 3 insulin pens, 5 insulin pens, or 12 insulin pens. Widely used for insulin, interferon, eye drops, and serum storage. Insulin requires a separate cold chamber to effectively prevent bacterial cross infection. The insulin cooler (powered by USB) can work together with USB, car chargers, lithium batteries, and charging power sources. It is a first-class brushless fan with a working noise of less than 30 decibels, quieter, and more durable, designed specifically for people who need to work in cars, airplanes, travel, offices, homes, and outdoors. (High definition screen) Large screen LED screen, real-time temperature display, precise temperature control. Low battery level, intelligent reminder for high and low temperatures. Even for the elderly, the operation is simple and easy to use. The insulin travel refrigerator can maintain insulin at a temperature of 2-8 C even in an ambient temperature of 30 C. The cooling effect is better than ice packs containing insulin. The portable insulin refrigerator solves the problem of cooling medication when going out, and is used to keep insulin or other injectable medications at a safe temperature.