Roborock RockMow X115H (0.37 acre, 80% slopes)
Why this one. The page states up to 0.37 acre of coverage, 4WD, 80% (38.7°) slopes and 3.15-inch obstacles, RTK + quad-camera navigation, wire-free.
Skip it if. Your lawn is small and flat — this is the big, capable end.
- Coverage 0.37 acre
- Slope 80% (38.7°)
- Drive 4WD
- Weight 50 lb