I can't believe how cool ( really) thisfreezer/fridge is!!!I ordered this because I liked the looks. It was actually a bit bigger than I wanted...so I also ordered another 17 qt fridge to compare.I like the size of the 17qt, but after turning this one on and seeing how much more efficient this is, and with good features, I'll be sending the 17qt back!This has a light inside so you can get to stuff in the dark. The temperature display shows in both Fahrenheit and Celsius at the same time.It holds in the cold for a much longer time than the other! I'm talking, on eco, it took almost five minutes to go down half a degree! So the motor didn't have to switch on that often, but it doesn't let it go down more than 1 degree before switching back on...One degree!The little side fridge is only good for maybe butter and cheese. It's pretty small. But the main area is roomy for 21 liters.I think this thing uses less power than the 17qt I ordered and am sending back.It really has a beautiful sleek hand feel to it also, and visually really appealing : >I love my new freezer/fridge!I hope I send business this company's way, because wow, they deserve it, and you definitely won't regret buying this beauty!!! : >My mini camper and I are officially ready for that road trip to New England!Though it wasn;t as big as I would have liked. It work fantastic to keep our frozen foods on a 6 hr trip for vacation. Easy to set the digital part and I am not savvy on those things.So much better than igloo and Coleman vehicle cooler/ fridge it replaced. Really works. Keeps drinks in van for kids sports through spring summer fall. Hopefully will work next spring when I pull it out of storage for next season. This summer and fall were great!UKKISO 40L car refrigerator is my 3rd portable fridge. I just can't pass the chance to be able to test a portable fridge when Amazon offers through Vine program. My first one was Upstreman C3 30L which is nice but there nice but heavy due to metal frame body and defect with a warp cover. My second one I have is AAOBOSI 40L which I carry in my car when I go out on weekend or grocery shopping. Only problem is there is no bottom drain.UKKISO 40L fridge is slightly taller and narrower than AAOBOSI 40L. Out the box it is ready to use. The plastic body makes it relatively light compares to Upstreman C3 but still feels sturdy. Operation is pretty standard like my other 2 fridges and don't need to read the instruction to start using it. I hook it up to EcoFlow Delta mini (B09C8GCP8F) as my power source. I don't use the car plug too often. The fridge will draw about 45-60W from the power station when running. Once the fridge reach the set temperature, the compressor will stop running. In 5 hours the battery station shows about 20% drop in capacity, roughly 36-40Wh is used(set at 0C, fridge in the SUV with windows slightly open and a mini fan circulating the air, outdoor temperature 85F).One complaint I have the cover door. It is open the long way and not the side way which takes less room. When I have it in my SUV, I cannot open the cover completely. That makes loading food a lot harder when one hand is needed to keep it open. The other thing is the app asked for couple permissions (location, and picture fold) before you can use the app. I don't know why the app needs to know that. After you grant the permission, connection to fridge through bluetooth is instant and application is straight forward.Because the cover door difficulty I keep this fridge mostly at home as a spare fridge plus the app permission issue I give this fridge a 4 star.