Item Type: Insulin Refrigerator Box <br>Material: ABS, electronic components <br>Battery: Supporting lithium battery NCR18650B 10600mAh 5V <br>Battery Use Time: A group of about 4-10 hours (the higher the ambient temperature, the shorter the use time) <br>Temperature Adjustment Range: 0-18℃ <br>Host Rated Voltage: External DC5V <br>Rated Power Of The Host: 10W when external power supply, 5W when connected to the battery <br>Refrigerator Host Size: Approx. 210 x 95 x 103mm / 8.3 x 3.7 x 4.1in <br>Refrigerator Size: Approx. 175 x 60 x 25mm / 6.9 x 2.4 x 1in <br>Storage Capacity: Able to store 3-5 insulin pens or around 10 insulin vials. <br>Power Supply: USB cable, adapters, power banks, car USB ports and lithium battery. <br>Suitable for Use: Traveling, home, office, car, pharmacy, hospital and other scenes. <br>Suitable for Refrigerating: Ideal for refrigerating drugs and biologics requiring refrigeration, including insulin and interferon. <br>Product Principle: This product uses a thermoelectric cooling component or semiconductor to achieve refrigeration. By applying a DC electric current to an area of the semiconductor, low temperatures are generated, and then these low temperatures are conducted to the medicine box. Finally, heat is dissipated outward by the heat sink through a fan. <br>Product Characteristics: Includes intelligent temperature control, a LED liquid crystal display screen, and instant semiconductor cooling technology. The product is stable, long lasting, low noise, and zero pollution with fluorine. Additionally, its small size and lightweight body make it easy to carry, which a new type of green product. <br> <br> <br>Usage: <br>Power on: <br>① External power supply: When the internal lithium battery is not installed in the main unit and the power adapter or USB power is connected, the machine will "beep" to indicate that it is powered on. At the same time, the machine automatically detects whether the battery is installed. If there is no battery, the screen displays full power. <br>② Battery power supply: When the external power supply is not connected, and the internal lithium battery is directly connected, the machine will "beep" to indicate that the battery is connected, and the screen will not display anything. <br>③ Simultaneous internal and external power supply: When the battery is already connected, if the external power supply is connected, the battery level indicator will be displayed on the screen, and the battery level will be detected. If the battery is fully charged, the battery level display will be full. If the battery is not fully charged, the corresponding battery level will be displayed while charging. <br>Power on/off: <br>① Power on: Press the "power button" for 1 second to power on. After a beep sound, the screen lights up, displaying the current temperature inside the box, as well as displaying the battery life and fan status. <br>② Power off: Press and hold the "power button" for 3 seconds to turn off the machine. After turning off, if there is a battery installed in the machine, the screen will only display the battery level indicator. <br>Temperature Setting: The temperature range of the refrigeration box is 0-18℃. Press the "up" and "down" keys to set the required refrigeration temperature. The temperature will blink during this process. Pressing the AUTO button briefly sets the temperature to 8℃. <br>Power supply methods: <br>1. Power adapter: When there is no lithium battery or the battery level is low, you can use the power adapter. <br>2. USB power cable: You can connect to a mobile phone USB charger, power bank, or car USB converter. Use a USB with a voltage of 5V and 2.1A or higher, otherwise it may burn out. <br>3. Lithium battery power supply: When charging the battery, connect the battery first, and then plug in the home adapter. If