An ergonomic collar especially designed for small to mild-mannered dogs. Dogtra ARC HANDSFREE comes with a 3/4-mile range, 2-hour quick charge battery/charger, a waterproof collar/receiver and transmitter. The collar features a low profile with a Rheostat/volume dial with up to 127 levels receiver and has a low to medium output designed for all kinds of breeds. The Handsfree Remote Controller gives you the freedom to multitask and have discrete control during field operation, making it perfect for hunting dogs and police K9 professionals.