Landroid Vision WR340
Rated for 1 acres and 30% grade — that is 16.7°, not 30°. On a real lawn, once you allow for borders and travel paths, plan on about 0.8 acres.
What it handles
Two-wheel drive, which caps how steep it can work. That is a flat-to-gently-rolling rating — a real slope will stall it.
Navigation is satellite-based without vision or LiDAR, so heavy tree cover is a real risk — it loses its fix under canopy.
If your ground is steeper
These are rated for a similar area but hold more grade than the Landroid Vision WR340’s 30%.
How confident we are
Cross-checked against the manufacturer and at least one other source.
Area corrected from 0.37 to 1.0 acre - a 2.7x error. The 1500 sq m figure belongs to the European Landroid Vision line (WR2xxE part numbers encode sq m); the US WR3xx Cloud line does not. WORX publishes 30% (17 deg). Do not carry slope across from the 4WD siblings - the WR344 is rated 84%.