Train your sporting dog with this collar and receiver training system. Great for training your upland hunter. Sport dog training collar has a ½ mile range (800 yds) to give you plenty of room to work. Both the transmitter and receiver are 100% waterproof and submersible. The lightweight receiver (2.8 oz.) is high output for enough power to train in the toughest waterfowl situations. Training collar has up to 16 levels of continuous stimulation. Up to eight levels of momentary stimulation. Tone button transmitter gives seven selectable modes of operation for sport or general training. Sport dog training collar can expand to three dogs if needed. Low battery detector feature on transmitter and receiver. Replaceable, rechargeable NiMH batteries (included). Basic dog training DVD and manual by Charlie Jurney included.