Thanks for choosing our portable cooler box (more properly called a "Medication and Insulin Refrigerator"). By adopting the technology of most professional high-tech semiconductor refrigeration and heat prevention, with a simple and elegant design, our products can create high-quality comfortable life for person need medication cooling when travel. Unused insulin can be stored for 2-3 years in an environment of 2-8 C. Used insulin can be stored for 6 weeks at 25 C. Cold Storage Temperature: 2-8?, If the room temperature over 30 ?,the case can t cooler below 8?. [product specifications] Temperature Setting: 0?- 18? Product net weight: 1.8kg Supply voltage: 12V 220V Power:5W External dimensions: 251x111x104mm Internal dimensions: 180x73x31mm Battery capacity: 6700MAH Box Contains 1 x Insulin Cooler 1 x Car power lead 1 x Home power lead 1 x Carrying case 1 x Lithium battery Precautions: 1. No water can be installed in the machine. 2. When using the external power supply for a long time, please take out the lithium battery to prevent the battery from over-discharging and prolong the battery life. 3. When the machine is not used for a long time, charge the lithium battery once every 3 months. 4. When going out, please prepare a reasonable number of battery packs according to the length of travel time to ensure the normal use of the machine.?Applicable to multi-drug refrigerators?Insulin, interferon, eye drops, growth hormone, commonly used drugs, serum reagents, 80 cooling space, can store 3-5 injection pens. ?Power supply method?Insulin cooler can be powered by USB, car charger, lithium battery and charging power supply, suitable for transportation and portability, most people prefer to protect the privacy of insulin, instead of putting it in the ordinary refrigerator. ?Ultra-quiet operation?Brushless high-end fan, running below 30 decibels, It is a quieter and more durable Insulin Cooler Travel Case, suitable for personal spaces such as offices, travel, and cars. ?Intelligent working system?HD LED display effect, fast cooling, smart battery, when the refrigerator temperature reaches the set temperature, switch to the energy-saving mode, effectively protect the motherboard and extend the service life. ?Affordable Small Refrigerator?The Portable Insulin Cooler is designed to provide a convenient and economical way to keep drugs (such as insulin or other injectables and drugs) at a safe temperature.