Pettags Remote Dog is a humane way to train your pet. Our trainer uses different levels of vibration or sound that can be tailored specifically to your dog's needs. This collar has a 150ft range, can adjust to fit neck size of up to 25" and is rechargeable. Collar includes a DVD instructional video. Features: 2 Training Modes (Sound and Vibration) Manual or Automatic Controls Auto Control (Low, Medium, or High) 150 ft. Range or 50 Meters Rechargeable Collar DVD Instructional Video