I absolutely love the motion sensor on/off feature. I also appreciate the one gallon water capacity. It makes for way less filling between cleaning. Although Indo add water at times as my Dog also enjoys.drinking from this cat fountain. I also found cleaning to be easier in the stainless steel water reservoir. Filters are super easy to change as well. Highly recommend this to anyone with cats or small dogs.On another note,I was concerned about the life of the charge to the pump since I do not have mine plugged in. I use the battery charger method, meaning I leave it unplugged and charge the fountain as needed. I have very few available outlets so this option is a huge selling point. I use a standard cell phone portable battery charger to charge the fountain. Works perfectly. Although you can choose to keep it plugged into an outlet all the time if you wish
