Feature:1. Cryogenic Technology: A thermoelectric refrigeration module is utilized to create a low temperature on a particular semiconductor via direct current and transfer the temperature to a medicine box through conduction. 2. Adjustable: The temperature of the device can be adjusted between 0‑18℃, and the LED display screen allows users to monitor the temperature, battery power, and fan working status in real time. Specification: Material: ABS, acrylic, electronic components Battery: Supporting lithium battery NCR18650B 10600mAh 5V. Temperature Adjustment Range: 0-18℃ Rated Power Of Main Engine: 10W when external power supply is connected, 5W when battery is connected. Main Machine Size Of Refrigerator: Approx. 210 x 95 x 103mm / 8.3 x 3.7 x 4.1in Refrigeration Room Size: Approx. 175 x 60 x 25mm / 6.9 x 2.4 x 1in Power Supply Mode: USB cable connection adapter, charging treasure, car USB interface, lithium battery, etc. Applicable Places: Travel, home, office, vehicles, pharmacies, hospitals and other places. Product Principle: This product uses thermoelectric refrigeration components, that is, semiconductors to realize refrigeration. On special semiconductors, low temperature is generated by direct current and transmitted to the medicine box, and the heat is dissipated by the radiator through the fan. First, the method of use: 1. Power on: ① External power supply: When there is no built in lithium battery in the host, when the power adapter or USB power supply is turned on, the machine will beep to indicate that it is powered on, and the machine will automatically detect whether the battery is installed. If there is no battery, the screen will display the full battery. ② Battery power supply: When the external power supply is not connected and the built in lithium battery is directly connected, the machine will beep to indicate that the battery is connected, and the screen will not be displayed. ③ Internal and external power supply at the same time: when the battery is connected, when the external power supply is connected, the power mark will be displayed on the screen, and the power will be detected. If the battery is fully charged, the power will be fully displayed. If the battery is not fully charged, the corresponding power will be displayed and charged at the same time. 2, switch machine: ① Boot: Press the power button for 1 second, and after a beep, the screen lights up, and the temperature shows the current temperature in the box, as well as the battery charge and the working state of the fan. ② Shutdown: press and hold the power button for 3 seconds to shut down. After shutdown, if there is a battery in the machine, only the power mark will be displayed on the screen. 3. Setting temperature: The temperature setting range of the refrigeration box is 0-18℃. Press the ▲▼ key directly, and the temperature will flash. At this time, the required refrigeration temperature can be set. Second, the power supply mode 1. Power adapter: If there is no lithium battery or the battery power is low, the power adapter can be used. 3, lithium battery power supply: ① Open the battery cover at the bottom of the host, and connect the power cord and lithium battery in the battery box of the host. Connect the power cord card of the battery, put the battery in the box and cover it.