Keeping your dog training methods simple helps both you and your dog. The Dogtra 280C electronic collar is perfect for basic obedience training and is safe to use on dogs 10 pounds and heavier. This ultra-compact collar and receiver unit comes with a remote control so you can communicate commands to your dog from up to a half a mile away. The training modes includes nick, constant, and a non-stimulating pager vibration that's softer than an iPhone buzz. Set the collar to one of 127 levels of low to mid-range stimulation. This waterproof system can be expanded to include a second dog.