Far behind in the test when mowing. The ultrasound tubes do not save it.

Behind it is the WR141E / M500 from Worx Landroid, which achieves a decent mowing performance. Unfortunately, the model can only be operated in a very rudimentary way; the app should be consulted here. A practical feature is the battery, which can be easily removed and used in other devices from the same manufacturer (Worx Landroid)...