Thanks for choosing our portable cooler box By adopting the technology of most professional high-tech semiconductor refrigeration and heat prevention, our products can create high-quality, comfortable life for person need medication cooling when travel. Insulin-knowledge: 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. Precautions: 1. If you use the external power supply for a long time, please remove the battery, overcharge and leak. 2. If the battery is left unused for more than a week, remove the battery to avoid overcharging. 3. Do not use the battery for a long time, charge it every three months to avoid overcharging. [product specifications] Temperature Adjustment Range: 2?- 25? Material: ABS Aluminum Liner Temperature Control System: Intelligent Constant Temperature Appearance Size: 19.8x9x8cm Internal Dimensions: 17.5x5.8x2.6cm Product Net Weight: 0.8kg Car Input Voltage: DC 12V 24V Household Voltage: AC 100 240V Power:5W Box Contains 1 x Insulin Refrigerator 1 x Car Plug 1 x Mains adaptor 1 x Carrying Case 1 x Lithium Battery Delivery time is generally 10-15 days. If you do not receive your purchase information within 30 days, please contact us in time. If you have any questions, please contact us in time.?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?charging treasure, car, house, cigarette lighter, computer USB interface, battery can provide power, 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, quieter and more durable, suitable for personal space, such as office, travel, car. ?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 insulin refrigerator is designed to provide a convenient and economical way to keep drugs (such as insulin or other injectables and drugs) at a safe temperature.