Item Type: Insulin Refrigerator Box_x000D_ Material: ABS, electronic components_x000D_ Battery: Supporting lithium battery NCR18650B 10600mAh 5V_x000D_ Battery Use Time: A group of about 4-10 hours (the higher the ambient temperature, the shorter the use time)_x000D_ Temperature Adjustment Range: 0-18_x000D_ Host Rated Voltage: External DC5V _x000D_ Rated Power Of The Host: 10W when external power supply, 5W when connected to the battery_x000D_ Refrigerator Host Size: Approx. 210 x 95 x 103mm / 8.3 x 3.7 x 4.1in_x000D_ Refrigerator Size: Approx. 175 x 60 x 25mm / 6.9 x 2.4 x 1in_x000D_ Storage Capacity: Able to store 3-5 insulin pens or around 10 insulin vials. _x000D_ Power Supply: USB cable, adapters, power banks, car USB ports and lithium battery. _x000D_ Suitable for Use: Traveling, home, office, car, pharmacy, hospital and other scenes._x000D_ Suitable for Refrigerating: Ideal for refrigerating drugs and biologics requiring refrigeration, including insulin and interferon._x000D_ 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._x000D_ 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._x000D_ _x000D_ _x000D_ Usage:_x000D_ Power on: _x000D_ 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. _x000D_ 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. _x000D_ 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._x000D_ Power on/off: _x000D_ 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. _x000D_ 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. _x000D_ 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._x000D_ Power supply methods: _x000D_ 1. Power adapter: When there is no lithium battery or the battery level is low, you can use the power adapter. _x000D_ 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. _x000D_ 3. Lithium battery power supply: When charging the battery, connect the battery first, and then plug in the home adapter. If