Announced to cover maximum 17 m in width and 21 m in length (350m), I'm pretty half ... but I obviously think it comes from a flow problem and my external pressure robineteries (not had time to calculate again). For the rest, he does what is asked of him without flinching. You can adjust the left and right travel separately to place the sprinkler along a path such that it does not need to be watered while the other side, yes. The nozzles are so oriented in a more or less horizontal on the left and right independently. The clearance can be adjusted in length (the stubborn oscillation) to water more or less far. And finally you can adjust the flow. I have not yet had to unclog nozzles with the small tool supplied (hidden in the unit). I can not speak to the long-term reliability yet, but for now I am very satisfied