It's very nice not to have to pump constantly! The electric motor does its job, the pressure rise is very fast. He still has two big complaints: 1) the strap for carrying on the shoulder is too long and too close so sharp. For me it is unusable which makes it hard work. 2) the nozzle is very short and therefore not expandable is great when it is necessary to constantly bend down to the ground to treat. Again, this increases the difficulty of work.
It's a shame for ruining a good idea to save money wise and pound foolish. I would have paid a few euros more for a product more comfortable to use.