Radio Systems Corp Sporthunter 1/2 Mile Trnr

1/2 mile range (800 yards). Waterproof/submersible transmitter & receiver. DryTek Waterproof Design Technology. Very small receiver (2.8 oz.). Up to 16 levels continuous stimulation. Up to 8 levels momentary (nick) stimulation. Tone button. Transmitter offers 7 selectable modes of operation. Expands to 3 dogs. Low battery detect feature in both transmitter & receiver. Replaceable rechargeable NiMH batteries included. Basic training DVD & manual