Dual Zone: This 12V portable refrigerator has a dual zone, so you can control the temperature separately for true dual-zone temperature control. It can be used as both a refrigerator and freezer, but also as a fridge/freezer, refrigerator/freezer, or freezer/freezer IceDrive: The Aspen portable refrigerator has a regular dual zone system and an IceDrive system. In addition to having the regular dual zone control system, we have additionally designed the IceDrive system, which keeps the s zone always below 0 F and allows you to store colder foods, such as ice cream Fast Cooling: The temperature range of both zones is -9 to 68 .In normal dual zone mode, each zone can be cooled from 77 to 32 in 15 minutes. Once the IceDrive is activated, the S zone can reach 0 F in 30 minutes even faster External Battery Design: A special and unique external battery design allows for extra storage space inside the battery-powered fridge, allowing for more capacity to stock up and store more of what you need 2-Year Tech Support: If you have any questions, please reach out to BougeRV, we provide 2-year tech support for the compressor and all other accessories. (Package included: removable baskets, DC power cord, AC power cord, and user manual)