Judging the quality of an insulin refrigerated box is very simple, with long cooling time being a key factor. It supports multiple charging methods, and the touch screen operation is simple and convenient for the elderly to use. The battery and temperature display can detect the condition of the refrigerated box in a timely manner. It is best to have a low battery alarm reminder, brand after-sales service, and market user reputation. Many people need insulin, and carrying insulin on their own has become a challenge when going out. Having a useful insulin freezer is crucial.