1. CONSTANT TEMPERATURE: This cooler will keep your drugs cold and at a constant temperature, keeping them at a safe temperature and allowing you to carry them better when you are out and about.     2. FAST COOLING: This insulin box with powerful 12 V cooling clip and internal aluminum material can be cooled quickly in 10 minutes, even in high temperatures of 32& 8209;40°C.     3. SCREEN: This insulin cooler has a large display on the appearance to show real time battery and temperature information, simple and convenient for the elderly.     4. CHARGEABLE: You can equip this insulin cooler with a lithium battery (not included) so that your drugs can be kept at a constant temperature without power.     5. CAPACITY: This cooler has a large capacity for 7 insulin pens or 10 biological reagent bottles or a combination of both, solving your need for refrigerated drugs out and about.         Specification: Item Type: Insulin Cooler     Material: ABS     Battery: 1 x Lithium ion battery pack (not included)     Battery Type: 18650     Temperature adjustment range: 2 & 8451; to 18 & 8451;     Scenes: Suitable for home, office, pharmacies, hospitals and any other places     Item: Insulin, interferon and other drugs and biological reagent that require refrigeration              How to Use:          1. External Power Supply: When there is no built in lithium ion battery, connect the power adapter or car power, the machine will beep, indicating that the machine began to work, if the built in battery, the product will automatically charge.              2. Battery: When there is no external power supply, directly connect the built in lithium ion battery, the machine will beep, indicating that the battery is connected. Press the power button for 3 seconds to turn on the machine.               3. Power on: Press the power button for 3 seconds, the beep sound, the screen lights up, showing the current temperature inside the box, while the battery is energized, the fan is running. If in battery operation mode, the screen automatically turns off after 10 seconds to save power and not operate.               4. Set the Temperature: Refrigerator temperature range of   2 & 8451; to 18 & 8451;, press the key set twice flashing display temperature, and then press +, & 8209; to adjust the temperature.              Package List:     1 x Insulin Cooler     1 x USB Cable     1 x Manual     1 x Carrying Cord     1 x Carrying Bag