FunAce Remote Dog Training Collar (1 Dog System) is a safe and effective behavior aid to help train your dog. You control different operating mode: vibration (100 levels), shock (100 levels), and tone using the remote transmitter. The waterproof collar receives the action signal up to 1000 feet and acts accordingly on your dog. Your dog will start to learn and rid of all unwanted behaviors after training for 15 consecutive days. Features 3 Modes: Static Shock/Vibration/Beep 100 Levels of Vibration and Static Shock Correction Simulation Rechargeable Remote Transmitter with LCD Screen and LED Flash Light Rechargeable, Waterproof Receiver Collar (can submerge in water) Durable and Adjustable Nylon Collar Strap From 8 to 20 Inches; Fit Dogs 8 lbs or Larger Up to 1000 Feet Signal Range Power saving design with Automatic Standby and Memory Function Package included 1 Remote Transmitter 1 Collar Receivers 1 Adjustable Nylon Belt 1 USB Charging Cable 1 Charger 1 Shock Testing Bulb 2 Pairs of Metal Probes Training Your Dog It is essential to train your dog for this system to work. Off leash behavior training such as barking, jumping, biting, chewing, charging at visitors, and other aggressive behaviors. Spend 15 minutes each day for about 3 weeks to teach your dog the proper behavior and that he feel comfortable wearing the collar regularly. Actual distance may vary: Optimal distance when transmitter is at least 30 feet from the road with minimal landscaping, sloping, nearby metal outbuildings as it interferes and block the signal from the transmitter. A variety of factors, including terrain, topography, and metal objects may also affect the operating range.