When I got my Apple MacAir, it worked as expected. I run a online business, very basic things on the computer. They have a 90 day warranty on this product but my problems started happening a month and a half after the warranty ended. First, my built in sound went out. I called Apple and they trouble shooter everything over the phone. Nothing worked. I ended up getting a Bluetooth speaker which worked so I dealt with the problem. My computer started to run run slow weeks after, the system thought it was over heating and in the same breathe, the system stopped holding charge. Once I plugged out the laptop, my system died!!!I finally went to Apple store about another month and change later because it unbareable to do anything on the system. They ran a test and my computer failed all test that were ran. They said that this shouldn’t have happened on the timeline that I had the computer.Long story short, I informed this 3rd party seller and they didn’t attempt to help at all because of their policy of 90 days. I was better off spending a few dollars more and going through Amazon products sold by Amazon, which the warranty is 365 days (1 yr warranty).I contacted Amazon again who have been so helpful and understanding of the situation but is very limited, I don’t have a back up computer at the moment and operating my business on my phone temporarily still waiting for assistance thru this 3rd party. I don’t stand behind their quality of product at this point and did not offer a replacement, like they knew their refurbished products wouldn’t last. Not cool! 3 thumbs down!#👎🏿👎🏿👎🏿