Thank you for purchg our portable refrigerator (commonly known as the "medicine and insulin refrigerator"). Using the most professional high-tech semiconductor cooler technology. Insulin knowledge: Unused insulin can be stored for 2-3 years at 0-18 C. Used insulin can be stored at 25 C for 6 weeks. ? The free-standing medicine refrigerator can effectively prevent bacterial cross-infection. Clean and hygienic medicine is a prerequisite for everyone's health. ? Low noise design, the sound is no higher than 30db when working, giving you a quiet sleeping space. ? Insufficient power notification, large LED display, sensitive adjustment, intelligent temperature adjustment, aluminum inner tank to prevent the loss of cool air. ? Insulin, vaccines, eye drops and other medicines can be placed, suitable for travel, home, work, business trips, etc. product details Product name: medicine refrigerator Size: 22.5 10.3 9.5cm Inner size: 20 9 4cm Net weight: 1.8kg Material: ABS Voltage: Car 12V Home 110V to 220V Temperature: 2? 18? Remarks: If you have any questions, please contact me by email in time![Portable]: When traveling, the medicine is exposed to unsafe high temperatures, which can damage the injected insulin and other medicines. With this portable refrigerator, the storage bag solves all the troubles. [Ultra-quiet operation] High-end brushless fan running under 30 decibels, quieter and more durable, suitable for personal space such as office, travel or car. [Capacity]: It can hold 3 insulin pens or 5 insulin pens or 12 insulin refills. It is widely used for storing insulin, interferon, eye drops and serum. Insulin needs a separate cold room to effectively prevent bacterial cross-infection. [Cooling temperature] 2-8 C 35.6-46.4 F, working temperature lower than 25 C 77 F ? When the room temperature is higher than 25 C, the cabinet can not be cooled below 8 C. [Small and Cheap Refrigerator] Insulin cooler provides a convenient and inexpensive way to keep medication (like other injected medication) at a safe temperature.