If this is for use in a pickup truck or say a motel. Where you would have access to 12 volt and then 110 when getting to your motel. I have a small Dometic refrigerator or freezer in my tractor. I also have a larger size that I have plugged into my truck. They will refrigerate or freeze stuff. Great for bringing back vacuum sealed frozen walleyes from Lake Erie. No matter what size you get. They do cost allot. They do get plenty cold to make your own ice to take on the boat. Allot of RVers use these or other brands. Here is a link to the bigger ones. I will try to find a link for the smaller ones.
https://www.amazon.com/Dometic-Elect.../dp/B01MRDNXPL
This is the one I use in the back of my truck. Kind of wish I had bought the next size up. One that incuded the 12 volt or 120 volt plug in. I have to use an adapter for mine.
https://www.google.com/aclk?sa=L&ai=...CoQ0Qx6BAgEEAE