I spent months hands-on with the Eufy E15 robot lawn mower, running it daily in my own yard and even testing it over at my neighbor’s to see what this “no boundary wire” promise looks like in real life. In the video I walk through the setup from unboxing to the first auto-mapping run, where the E15 uses its dual cameras and “pure vision” AI to figure out boundaries and obstacles without burying wire, and without messing with RTK or an antenna. I show what the map looks like in the app, how I drew a quick virtual boundary to keep it off my neighbor’s grass, and how I set no-go zones for flower beds. Once it’s mapped, I show how it mows in neat, methodical parallel lines—perimeter first, then the interior—plus what the cut quality looks like after a full session. I also cover the stuff people actually worry about: obstacle avoidance with its 3D perception, slope handling (it’s rated up to a 40% grade and it handled my hills), and edge trimming performance along patios and fence lines. I wrap up with the quirks I noticed (it prefers daylight because it’s vision-based, and you may need to fine-tune virtual boundaries early on), plus my verdict on what kinds of yards this mower is best for.