The D.T. Systems H2O1850-PLUS series has an 1800 yard (1 mile) range and come with completely waterproof and rechargeable (Ni-MH batteries) transmitter and collar units. Nick and Continuous Stimulations come standard on every model in the H2O1850-PLUS series line-up.
The Beeper gives you the ability to keep track of your dogs location when he is out of sight and lets you know when he has gone on point. This allows you to find the dog quickly and prevents you from making the mistake of calling the dog to you when hes on point.