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 1850 includes a beeper/locator. 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 receiver collars for training up to two dogs.