The current OS on my silver MacBook Air (A1466, 13-inch, Early 2015) is Monterey. I purchased it new in July 2016. According to the Apple website, it is possible to upgrade to macOS Ventura or Sonoma using an installer, USB drive, and Terminal (Apple's Utility). Exterior Scratches: There are no major noticeable scratches. I have taken photos of the visible ones for your reference. Please take a look. Battery: The cycle count is 60 (see photos), but when using it continuously without the adapter (even when the power indicator shows over 90%), it sometimes shuts down. Keyboard Condition: No stains. LCD Display: No issues such as dead pixels. Included Accessories: Adapter, Mouse I have been using this myself, but I am selling it because I upgraded to an M-chip MacBook Air. The mouse cable is also damaged, so please consider it as an extra. I hope you will consider purchasing it.