A completely waterproof transmitter and receiving system that covers everything from basic to advanced training. It's designed with the harshest environments in mind and even the transmitter floats if dropped in water. It has a range up to one mile and comes complete with waterproof, rechargeable NiMH batteries; transmitter; and collar. Nick and continuous stimulations are standard. The 1830 features the new "jump" stimulation for "jumping" frequently between stimulation levels and a rise stimulation button that continuously increases stimulation until the button is released. Sixteen adjustable intensity levels, digital technology, Maxx-Range™ internal collar antenna system, extra-mild Gentle Touch™ stimulation and built-in safety shut-off. Upgrade system by purchasing additional orange-colored receiver collars for training up to three dogs.