DT Systems H2O 1820 Dog Training Collar with vibration stimulation options too! Top quality for top dogs! This DT Systems Dog Training Collar features a waterproof collar, waterproof transmitter, rechargeable NiMH batteries and DT's MAXX Range Internal Antenna System. More details: 1-mile range; Waterproof collar and transmitter; 16 levels of momentary and continuous stimulation, plus vibration / stimulation simultaneously and vibrate only; MAXX Range Internal Antenna; Charger with double jack cable for simultaneous charging; Carrying case included. Order yours today! DT Systems H2O 1820 Dog Training Collar (1 Dog)