The TB 10 Dog Collar is compatible with the PRO Trashbreaker handheld device, and comes equipped with a remote operated LED beacon light to help locate your dogs in low light conditions. The PRO Trashbreaker can pair with up to nine TB 10 Dog Collars, allowing you to train multiple dogs at the same time, and features BarkLimiter to stop unwanted barking. Garmin TB 10 Dog Device Red Collar 010-01209-20