... C,LCD temp display Thermoelectric refrigerator CE Dison insulin case is lightweight and small, support battery power ... bussiness trip, or don't want to store insulin in a shared fridge in school, work place ... while ambient temp is 22~28'C, keep insulin safe for 30 days under ambient 40'C4 ... ,5.9W/DC7.4VProduct Net weight540g Dsion insulin case accessories Dison insulin case, only 540g, most portable style ...