This is our new, easy to use water bottle pump. This is a better unit because it is constructed with a stainless steel intake tube. This translates into a more rugged pump when compared to the other pumps with plastic intake tubes. This is a big feature that will help this pump last longer. This is battery operated. There is a simple switch that will allow you to pull liquid and stop whenever you would like. This can be taken anywhere and used to transfer a variety of liquids. There is a cap top that will apply a pressure fit to a 5 gallon water bottle that has the ringed top. The pressure fit will also work on a screw top and allow for normal pump operation. We will not recommend trying to pick the bottle with the pump, especially with the screw top. This is a well built pump.