... power supplies, battery operated 12 hrs 2~8'C,LCD temp display Thermoelectric refrigerator CE Dison insulin case is ... trip, or don't want to store insulin in a shared fridge in school, work place or home.insulin case features ... insulin safe for 30 days under ambient 40'C4. Large LCD display screen, show the time and refrigeration temp clearly, ... Dison insulin case, only 540g, most portable style in 2011