With the introduction of the new HoundHunter® model, specifically designed for controlling tracking and trailing dogs, you keep the thrill of the chase within your control. The model SportDog SD-3225 allows control of up to six dogs. The compact transmitter features color-coded indicators that correspond to available collar strap colors. It is ideal for hunters who pursue bears, bobcats, mountain lions and raccoons with multiple dogs. With a range of up to two miles, keeping control of a long-range pursuit is easier than ever. Once again SportDOG Brand delivers on our promise: Gear the way you’d design it.The add-a-collar is the SportDOG SDR-AH.