Positives:
+ Strong motor.
Negatives:
- Wheels easily dislodged from the mower.
In the Einhell device an engine is installed has today resigned choked half a meter tall grass tomorrow .. yes I know is not good for the race and certainly not for the mower, but my old lawn mower broke down, and the delivery was late "something".
Nevertheless, I forgive only 4 stars because of the repeatedly loosening wheels.
So it can happen that one to two times must screw up a bike again for a longer mowing.
Since missing on each wheel nut. Alas, it does not allow one to fix it in the design.
UPDATE:
The unit now has persevered 2 seasons and with me the device has no means good life. Have already Bosch Grass Trimmer & Co. destroyed.
Hats off! The unit is built to last.