1.insulin cooling wallet 2.can use Car power,AC power,and the battery. 3.keep 2~8 degrees stablly ... This product has many ways to supply power:110V~220V AC power for household, automotive 12V power supply, 7.4V battery, etc. ... Lightweight portable: pocket-sized body, configuration lithium battery power supply system and car power connector(2)Private space: dedicated refrigerated storage space for ...