This is the day comes with a single water jet that can be adjusted by a side handle for front and back washing. You push down for front and leave in the default position for back washing. There are three replaceable nozzles that come with it for mild, medium and forceful spray. I use the forceful spray nozzle because the pressure can be adjusted by twisting The knob on the wind and so I don’t really see any use for the other two But the pressure does change quite a bit between the three selections. I think this big guy does a good job and has a comfortable contoured seat. I got a very good price for it by choosing used like new, which quite a few units were available when I was ordering it was about half price but even a full price I think these are worth it. I’m very happy with the purchase because I ordered two.