The high-definition LCD touch screen is simple and easy to understand,Power display and temperature display making it easier for the elderly to operate.The arc angle design of the inner tank prevents the drugs from bumping in the box during the journey. Sandblasting and anodizing process makes the refrigerating temperature lasting. Cold storage temperature:2-8C(35.6-46.4F), operating temperature below 77F,If the room temperature over 25C,the case can't cooler below 8C It can put about 3 insulin pens or ,6 bottles or 20 refills; The cooler box can fast cooling in ten minutes,the portable battery standby time is more than 10 hours. USB cable,wall charger,power bank, car, home, storage battery can be used, suitable for travel, home, commuting, business trip and office