The SportDOG FieldTrainer SD-425XS Stubborn Dog 500 Yard Remote Dog Training System is a high-quality solution for training small extra small breed dogs. This system includes both vibration and static/shock control methods, ensuring your dog learns obedience commands effectively. The waterproof feature makes it perfect for outdoor use, while the rechargeable battery provides convenience and portability. The remote control allows for easy operation from a distance, making it a valuable tool for pet owners looking to improve their dog's behavior.