The circular brushes are fixed in contact pressure, other sweepers have variations. So far I have not missed this.
When Sweep up of pine needles, the machine comes to its limits, but can be pushed together to the sweepings yet and need to reproduce only slightly with dustpan.
Major drawback: One can for the device probably not be greater than 180 cm. Although the handle is adjustable in two click stops, but for me it is still too low. Sweeping with brooms is far more unfavorable for the back, because I take out the permanent Krumm walking. If the device more usable for 2m people, it'd give even five stars.