John, hes got fast little hobbit fingers to spin the prop
Just kidding its a really nice pump. Nice option to look at if you are considering tunze, sea swirls, or OM 4 ways. The nice thing is the battery back up and its speed control knob. they are 11watts to 30 watts depending on the speed you set it at and there is no motor in the tank to heat the water. I am going to get one or two in a few months.