How to Use: 1. When Used Indoors: Put lid of refrigerating cup on the cup body, connect power supply with plug, and connect lid of refrigerating cup with USB power cable, and then continuous refrigeration work can be carried out. 2. When Used Outdoors: 1 Put lid of refrigeration cup on the cup body, and connect power cord to a power supply with a USB interface, such as ordinary power banks, computers, and car cigarette lighter conversion interfaces, which can perform continuous refrigeration work. 2 You can find ice cubes or put an ice bucket filled with water 5 minutes in advance in the refrigerator to make ice, place ice cubes in the ice bucket, and place medicines in the medicine refrigerator, put them into the cup together, and use the thermos lid to keep cold. The normal cooling time of ice cubes in summer is 3‑5 hours. Do not put the medicine directly into the cup with ice cubes, otherwise it will cause the medicine to deteriorate due to the low temperature. Specification: Item Type: Mini Refregrator Car Reefer Cup Content: 900ml Power: 5W Package List: 1 x Insulation Cup 1 x Insulation Cup Lid 1 x Refrigeration Cup Lid 1 x USB Cable 1 x Medicine Storage Tube 1 x Ice Tube 1 x Ice Tube Lid 1 x Manual