Solving the problem of refrigerating medicines when going out, the portable insulin cooler box is used to keep medicines (such as insulin or other injected medicines) at a safe temperature. Even if the ambient temperature is 30℃, the insulin travel cooler can keep insulin at a temperature of 2-8℃. The cooling effect is better than insulin ice pack. When the machine is running, the noise is less than 30dB, creating a quiet atmosphere. Do not expose the drug to extreme temperatures. Most people prefer to store insulin in a private space rather than in a shared refrigerator. The insulin cooler can be powered by USB, car charger, lithium battery and charging power supply. Designed for people who need to work in cars, planes, travel, offices, homes and outdoors. Large screen LED display, real-time temperature display, accurate temperature control. Low battery, smart high and low temperature reminder. The operation is simple and easy to use even for the elderly.