Efficient, well designed, but a bit expensive for a version without battery / charger

The border size is quite light and you can adjust the length of the arm and the position of the handle for lergonomie.
The head rotates 90 °, it allows to work also vertically along dune edge or roasting (like that in a collision, the blade abuts against the earth rather than against me or my border fence).
The trigger has two screens (for 2 speeds), it helps to limit wear and tear of the blade in risky places. Dailleurs the engine stops when too much of grass or obstacle volume (just as well to limit the damage!). There is also an adjustable metal pin (a hoop) to create a stop.
The power is good (this is not a brush cutter either!) And the unit is silent.

At first we blades wear out quickly enough but with the experience we become more accurate.
The new blades can be stored on the device, behind the battery, so they are at hand. Replacement is very simple.

Only downside the price, currently 20 difference with the battery / charger Version!