DogWatch SideWalker SW-5 Leash Training Collar When your dog pulls on the leash, the pressure of the collar strap on the Side Walker activates either a vibration or a stimulation. The vibration or stimulation gradually increases as your dog pulls and resets when the pulling stops. It gently corrects overly enthusiastic leash pulling and helps your dog learn appropriate on-leash behavior. The self-teaching design assists in reinforcing appropriate leash training and eliminating excessive pulling. 5 Adjustable Settings. The 5 adjustable settings include a vibration setting, 3 stimulation settings and a Progressive setting that begins with Vibration and gradually progresses from Low to High if your dog continues to pull. Progressive Levels. When your dog pulls, the level of the vibration or stimulation (for that setting) gradually increases. When your dog stops pulling, the SideWalker resets to the lowest level for that setting. The Side Walker has 5 adjustable settings from low to high plus a vibration option so you can select a setting appropriate for your dog. Includes: Side Walker Receiver, Collar strap, Battery charger, Test light / Contact post tool, Long & short contact posts, Owner's manual. Long-lasting Battery. The long-lasting, easy to recharge battery typically stays charged for several days. Low battery indicator. Lets you know when it is time to recharge. Lightweight, waterproof. Because dogs will be dogs.