Spend less time training and more time enjoying your dog. At the push of a button, the remote sends a signal, activating your dog’s receiver collar from up to 1,000 yards away. The collar delivers a safe, gentle static correction. Your dog will quickly learn the association between his behavior and the correction. The Elite Big Dog Remote Trainer is a rechargeable, reliable, versatile, easy-to-use tool to help you train your dog off-leash. Expandable to two dogs with purchase of PAC00-13632- Add-A-Dog collar sold separately.