If you’re looking for a training collar that’s great around the house as well as in the field, look no further than DT Systems’ H2O 1830 PLUS. This 1 mile range collar system has 16 levels of momentary (or Nick) and Continuous Stimulations. It also has our Jump feature, which will make the stimulation “jump” to a user-programmed intensity level, and our Rise feature, which will make the intensity level "rise" gradually while pressing the button. Both the collar unit and the transmitter are completely waterproof. In fact, the transmitter will actually float on water; perfect for all you waterfowlers who spend more time on the water than the ducks do. In fact, the transmitter will actually float on water. And if you ever decide to get more dogs, the H2O 1830 PLUS can expand up to a three dog system with Add-On Collars (sold separately).