I love this sprinkler!  The arms adjust to sprinkle fairly narrow areas, maybe less than 20 feet wide.  It is slow moving even on the high speed.  It doesn't take sharp turns well.  It also "jumps" off the track sometimes, but don't sit there and watch it to see how/when it happens, but I have caught walking over in the neighbors yard before.  Also, when it approaches the ramp to turn off, it doesn't always make it up the ramp to turn off.  It just gets stuck there watering forever if unsupervised. But every other manual sprinkler requires constant supervision, this takes the constant moving the sprinkler out of the mix.  Is a great sprinkler to use in the wind as well.  Plus who doesn't love a walking tractor sprinkler!