The PT 10 dog device works with both the PRO 70 and PRO 550 handhelds, allowing you to add more dog device collars to your pack. Train up to 6 dogs on 1 PRO 70 handheld, or 3 dogs on 1 PRO 550 handheld (additional dog devices required) with a range of 1 mile, plus remote-operated LED beacon lights for low light conditions and built in BarkLimiter, activated on the dog device, for a quieter kennel. PT 10 features a built-in BarkLimiter, activated by the dog device. BarkLimiter features Autorise technology, which automatically adjusts correction to the optimum level needed to stop unwanted barking.The PT 10 dog device collar is designed to withstand all the blows, bumps and sloppy conditions of training and hunting, and comes with 2 lengths of removable, stainless, insulated contact points for reliable performance in wet conditions and extended comfort for the dog. The dog device is water rated to 10 meters, and features a long-lasting, rechargeable, lithium-ion battery. A battery lif...