I liked the idea of this pet fountain as soon as I saw it. Once I received it, I loved it. I liked it so much, I bought a second one to replace the regular plug-in fountain we had. Its very simple to set up and begin using. While charging the battery I washed the parts and got them ready. You simply fit the filter holder into place on the water basin, place the filter into the holder, then fit the cover onto the top of the water basin. The motor slides right into the top over. The motor assembly already has the tube that submerged into the water. Although the writing on the top of the motor assembly is tiny, the button and functions are easy to use. A long press of the button turns the unit on or off. Once the unit is on, the fountain will run water into the dish by simply moving your hand in front of the thermal motion sensor. A tiny light on top of the unit will blink for a few minutes to indicate that it has refreshed the water. It can activate every 30 minutes, but doesn't run constantly to preserve the battery. A double press of the button activates the UV light for disinfection. I activate that every time I add more water. The fountain is very quiet. Our cat accepted the new bowl right away without being scared of it. The design prevents her from dipping her paws in it and because the basin of water is covered, it stays clean much longer. The fountain is slim and since it's battery operated, it can be placed almost anywhere. The battery life so far has been great. I've only charged each of our units that first initial time before we began using them. The first unit was charged around May 20th and is still working great on July 25th. I am impressed with the functionality of this fountain and could recommend it.