A tried and true classic, the Garmin PRO 550 Dog Tracking-Training Device is tube-shaped for 1-handed easy operation, so you keep your eyes on your dog at all times. This dog training device from the experts at Garmin lets you choose from 21 levels of continuous and momentary stimulation, tone, and vibration for up to 3 dogs at a time. The Garmin PRO 550 Dog Tracking & Training Device w/ Built-in BarkLimiter features a built-in BarkLimiter which includes the Autorise technology, which automatically adjusts correction to the optimum level needed to stop unwanted barking. The Garmin PRO 550 Dog Tracking/Training Device comes with 2 sizes of removable, stainless, insulated contact points for reliable performance in wet conditions and extended comfort for the dog. The Garmin PRO 550 Dog Tracking-Training Device w/ Remote Control allows advanced training for the serious professional to keep the peace at home and your dog well-trained.